Questions Asked on
December 3, 2012

  1. Physics

    A block with a mass of 2.5 kg on a frictionless track collides and sticks to a stationary block with a mass of 1.75 kg and the two more together at a velocity of 3.5 m/s. What was the velocity of the first block? A. 2.5 m/s B. 7.5 m/s C. 6.0 m/s D. 0.6 m/s

    asked by john
  2. Physics

    The work required to bend a steel beam with a spring constant of 10^6 n/m is 5 j. If it is treated like a perfect spring, what is the displacement of the beam? A. 3.2 mm b. .03 m C. 2.5m D. 0.026 m e. 0 Pls show work thank u!

    asked by john
  3. Physics

    A skateboarder enters a ramp at 5 m/s, skates down it and exits at 14 m/s. What was the Height of the ramp? A. 8.7 m B. 85.5 m C. -1.2 m D. 3m E. 1.2 m Pls show work !

    asked by john
  4. Physics

    A new roller coaster is a conservative system. If the coaster leaves the starting point with a speed of 5 m/s and a height of 25 m, what is its velocity when it reaches a height of 2.5 m? A. 9.81 m/s^2 B. 21.6 m/s C. 15.4 m/s D. 12.6 m/s Pls show work

    asked by Ciara
  5. Chemistry 3A

    a sample of nitrogen gas, N2 occupies 3.0L at a pressure of 3.0 atm. what volume will it occupy when the pressure is changed to 0.50 atm and the temperature remains constant?

    asked by Gurjot
  6. Chem

    Methane and Hydrogen Sulfide react at 960 degree Celsius and come to the following equilibrium CH4(g)+2H2S(g) CS2(g)+ 4H2(g) At Equilibrium the concentration measured as [Ch4]= 5.56M [H2s]= 11.12 [CS2]= 2.44M [H2] 1.76, A) Write the equilibrium constant

    asked by Jason
  7. URGENT!! 7th Grade Math Help Please!!

    2. Price of the iPad Mini: $329.00 Price of the iPad with a 15% discount. Show all of your work please!! [4 points]

    asked by CrazyGameWhizz
  8. Chemistry

    How many hours are required for the deposition of 15.0 grams of Al from molten AlCl3 by a current of 15.0 amps?

    asked by Joe
  9. Trigonometry

    2. Choose the point that lies on the curve r = 2 – 3 sin θ. A. (-5, 3π/2)

    asked by Erick
  10. Pre-Calculus

    The median salary for male workers for the years 1975-2006 can be modeled by the function thousand dollars, where x is the number of years from 1970. Find the minimum on the graph of this function between x = 10 and x =30 and interpret it.(Use the window

    asked by Glen
  11. health

    what might be collected on a social profile

    asked by jessica
  12. Trigonometry

    1. What is the area of triangle ABC if a = 47.0°, β = 57.8°, and a = 10.2 cm? A. 58.2 cm2

    asked by Erick
  13. Pre-Calculus

    10. Suppose the cost C of removing p% of the impurities from the waste water in a manufacturing process is given by a) Where does the graph of this function have a vertical asymptote? b) What does this tell us about removing the impurities from this

    asked by Glen
  14. math

    HELP PLEASE!!!! The question is: Carmella works 37.5 h per week for Century Home selling electronics equipment. She earns a base salary of $12/h and receives a commission of 5 cents for every dollar of sales she make. Her chart goes like:

    asked by Y
  15. criminology

    Which of the following is not considered to be one of the most important groups contributing to the process of socialization, according to social process theories?

    asked by brianna
  16. chemistry

    Carbon-14 has a half-life of 5730 . In a plant fossil, you find that the has decayed to 1/32.0 of the original amount. How long ago was this plant alive?

    asked by niles28
  17. chem

    What is the average [H3O^+] of the vinegar solution at the neutralization point in the titration process? pls need help with this. i tried to research about it but can't find any answer or any explanations anout this. Thanks

    asked by akira 12
  18. physics

    A roller coaster car is moving at 20.0m/s along a straight horizontal track. what is the speed after climbing a 15.0m hill? neglect the effects of friction

    asked by Chelsey Achord
  19. physics

    . The space shuttle typically orbits 400 km above the earth's surface. The earth has a mass of 5.98 × 1024 kg and a radius of 6,380 km. A) How much would a 2000 kg part for the space station weigh when it has been lifted to that orbit in the shuttle's

    asked by Chelsey Achord
  20. physics

    Jennifer, who has a mass of 50.0 kg, is riding at 35.0 m/s in her red sports car when she must suddenly slam on the brakes to avoid hitting a deer crossing the road. She strikes the air bag that brings her body to a stop in 0.500 s. What average force does

    asked by Chelsey Achord
  21. physics

    Suppose that a sled is accelerating at a rate of 2 m/s2. If the net force is tripled and the mass is doubled, then what is the new acceleration of the sled?

    asked by Chelsey Achord
  22. physics

    An open barge has the dimensions l=22 m, w=40 m, and h=12m. If the barge is made out of 4.0 cm thick steel plate on each of its four sides and its bottom, what mass of coal can the barge carry in fresh water without sinking? Is there enough room in the

    asked by deidra
  23. chemistry

    at a particular temperature, k equals 2.0 x 10 to the -6 power for the reaction 2CO2 2CO + O2 if 2.0 mol CO2 is initially placed into a 5.0 L vessel, calculate the equilibrium concentration of all species

    asked by Anonymous
  24. chem

    After obtaining a greenish color in an experiment what does this tellyou about the relative concentrations of H^+ and OH^- in the solution? pls help i really need a simople explanations about this.

    asked by akira 12
  25. chem

    What does it mean by Keq? Pls need an explanation with this. I'm a little bit confused. Thanks

    asked by Bea Alonzo
  26. St josephs

    Machine set up is correct 60% of time & is incorrect 40% of time, 10 % of parts produced are defective when set up is correct, & 60 % would be defective if set up is incorrect. Find the probability that part is defective even though machine was set up

    asked by Anu
  27. math

    8x^1\3 DIVIDED BY X^1\2 IS AND HOW DID YOU DO THE STEPS

    asked by tommie
  28. chem

    A solution is prepared by dissolving 75.0 grams of sucrose (C12H22O11) in enough water to produce 1.00L of solution. What is the molarity of this solution?

    asked by antu
  29. Pre-Calculus

    I am supposed to solve these conics, can you please help :)I am supposed to name the center and the vertices. 1. 3y^2-2x^2+12x+24+24y=0 2.-16x^2-4y^2=48x-20y+57

    asked by Tori
  30. Pre-Calc

    I have to solve these using matrices by hand. Can someone please help me? 2x-3y-2z=4 (1/4)x-(2/5)y+(3/4)z=(-1/3) -2x+1.3y-3z=5 Thank you so much! :)

    asked by Tori
  31. maths

    Prove Cos (x+60)= 2Sinx

    asked by thomas
  32. Pre-Calc

    The cable in the center portion of a bridge is supported by five pillars to form a parabola. The center support is 10 ft high, the tallest supports are 210 feet high, and the distance between the two tallest supports is 400 ft. Find the height of the two

    asked by Tori
  33. itu

    A man with a mass of 64.1 kg stands up in a 61-kg canoe of length 4.00 m floating on water. He walks from a point 0.75 m from the back of the canoe to a point 0.75 m from the front of the canoe. Assume negligible friction between the canoe and the water.

    asked by diagne
  34. physics

    A man with a mass of 64.1 kg stands up in a 61-kg canoe of length 4.00 m floating on water. He walks from a point 0.75 m from the back of the canoe to a point 0.75 m from the front of the canoe. Assume negligible friction between the canoe and the water.

    asked by diagne
  35. English

    1. They can understand new commands after only a few times. (Does 'only' modify 'after a few times'? noun phrase...) 2. They understand new commands only after about 100 times. (Does 'only' modify 'after abut 100 times'? adverbial phrasse...)

    asked by rfvv
  36. English

    1. Mt. McKinley is the highest. 2. Mt. McKinley is highest. 3. Mt. McKinley is higher than any other mounttain in the USA. 4. Mt. McKinley is the highest of all the mountains in the USA. 5. Mt. McKinley is highest of all the mountains in the USA. 6. Mt.

    asked by rfvv
  37. math

    finding out 5 rational numbers between -3 upon 5 and -1 upon 2

    asked by prajjwal
  38. Math

    In five years,Emma will be three years more than twice as old as her son. Five years ago,she was two years less than five times, as old as her son. How old Emma now?

    asked by Angel
  39. science

    Whatis the effect if not handeld the cough syrup?

    asked by jill
  40. maths

    insert 5 rational numbers between -3 upon 5 and -1 upon 2

    asked by prajjwal
  41. science

    what is the effect if not property handeld in soap.

    asked by jill
  42. maths

    the slant height of the frustum of a cone is 5cm.if the difference between the radii of its circular ends is 4cm.write the height of the frustum. plz this question.

    asked by simranpreet
  43. Astronomy

    What is the radius of the sun?

    asked by jane
  44. Astronomy

    What is the maximum altitude above the horizon at which it is possible to find the moon when you are observing from a position at 42 degrees northern latitude?

    asked by jane
  45. maths

    the sum of first 8 terms of an arithmetic progression is 156.the ratio of its 12th term to its 68th term is 1:5.calculate the first term and the fifteenth term. please help this questions please.

    asked by simranpreet
  46. Astronomy

    What is the size of the smallest craater on the moon that you can see with a telescope with a resolution of 2 arc seconds at a distance of 384,400 km?away

    asked by jane
  47. Physics

    Two ideal gases have the same mass density and the same absolute pressure. One of the gases is helium (He), and its temperature is 298 K. The other gas is neon (Ne). What is the temperature of the neon?

    asked by Frustrated
  48. maths

    the 8th term of an a.p is 37 and 12th term is 57 .find the a.p please help this questions .please help.

    asked by simranpreet
  49. accounting

    On September 1, 2013, Jacob Furniture Mart enters into a tentative agreement to sell the assets of its office equipment division. This division qualifies as a component of the entity according to GAAP regarding discontinued operations. The division's

    asked by Lisa
  50. math

    From a stick 2y metres long, I cut a piece of length 4y centimetres. What fraction of the original stick remains?

    asked by Anonymous
  51. chemistry

    1.To make the following saline solution (375ml 0.5% w/v sodium chloride). I have weighed 1.875g of NaCl. What will be the volume of water that is required?

    asked by Christina
  52. chemistry

    Does molecular weight of water (H2O) = atomic weight of 2H + O = 2(1.008) + 15.999 = 18.015g ~ 18.02g (4. sig. fig.) is it correct?

    asked by Christina
  53. chemistry

    How many moles of glucose would be present in: 1Litre of a 5micromolar solution?

    asked by Christina
  54. maths

    the sum of 3rd and 5th terms of an a.p is 38 and sum of 7th and 10th terms of an a.p is 83,find the a.p. please help all questions please help please.

    asked by simranpreet
  55. Nutrition

    How can I write although reading, writing and math are important in school so is health and physical education?

    asked by Jo-Ann
  56. maths

    300 men were engaged to complete a job in a certain number of days. but due to another assignment fifteen men dropped the second day, fifteen more men dropped the third days and so on .if takes fifteen more days to finish the work now.find the number of

    asked by simranpreet
  57. maths

    find the value of p,if the numbers x, 2x+p and 3x+6 are three consecutive terms of an a.p

    asked by simranpreet
  58. Chem

    Calculate the pH resulting from the addition of the following: 50mL 0.1M KOH and 50mL 0.1M HBr

    asked by kat
  59. Division of Fractions

    How many 3/5 of a foot pieces are there in 18 feet?

    asked by Anoymous
  60. math

    the supervisor i'll give you a penny taday and double your pay every day for 30 days if you work for me. use a table to slove this problem what balance after 30 days? what is the interest rate and number of periods for this? what is a equstion for this

    asked by jojo
  61. maths

    four cubes of volume 125cm3 are joined end to end .find the volume and surface area of the resulting cuboid

    asked by simranpreet
  62. math

    Linda along with her family traveled a distance of 495 miles in 9 hours in her car. Find the speed at which Linda drove her car

    asked by Anonymous
  63. history

    8. The Puritan _______ became the governor of the Massachusetts Bay Colony.

    asked by sierra
  64. maths

    A bucket holds 28.49 liters of milk .the radii of the top and bottom are 28cm and 21 cm respectively.find the total surface area of the bucket.

    asked by simranpreet
  65. maths

    A well of diameter 7cm is dug 22.5m deep.The earth taken out it is spread evently all around it to a width of 10.5 to from an embankment .find the height of the embankment.

    asked by simranpreet
  66. math

    father gives his son three coins totaling 55 cents for school lunch. What coins did the boy receive if one coin is not a nickel?

    asked by suzy
  67. biology

    Why is fermentation an important process for some organisms?

    asked by Shane
  68. social studies

    What were the three major cities in the Islamic world?how did each develop and grow to become important?

    asked by jose
  69. Chemistry

    A buffer was prepared by dissolving 22.61g of NaCLO2 into 0.100L of 4.00M aqueous HCLO2. Calculate the pH of the original Chlorous acid/chlorite ion buffer. Ka= 1.1 x 10^-2.

    asked by May
  70. math

    Solve sin2x + sin4x = cos2x + cos 4x for x in the interval[0,2pi) Hint: the following substitution should come in handy: sin3x= cos3x . tan3x

    asked by greg
  71. Physics- PLEASE HELP

    A 60.00 cm guitar string under a tension of 46.000 N has a mass per unit length of 0.11000 g/ cm. (a) What is the speed of the wave? (b) What is the fundamental wavelength for this string? (c) What is the fundamental frequency for this string? (d)What is

    asked by Megan
  72. Physics- Someone Please Help!!!

    The overall length of a piccolo is 30.6 cm. The resonating air column vibrates as in a pipe that is open at both ends. Assume the speed of sound is 343 m/s. (a) Find the frequency of the lowest note a piccolo can play, assuming the speed of sound in air is

    asked by Tia
  73. math

    What is the ratio of 4/5 to 7/15?

    asked by me
  74. Programming Languages- NEED HELP!!

    Create a program that determine the shipping cost for an order based on the following table: From $0.00 $20.00 $50.00 $75.00 To $19.99 $49.99 $79.99 $1000.00 Price $2.95 $3.95 $4.95 Free

    asked by DJ
  75. Early Childhood

    Describe nine elements of daily structure recommended for any early childhood program.

    asked by Cathy
  76. maths

    find the sum of all two digit natural numbers which when divided by 7 yield 1 as remainder..

    asked by simranpreet
  77. Chemistry question

    Why do ionic compounds have high melting points?

    asked by Mia
  78. Chemistry

    A 1.20g sample of benzoic acid is burned in excess of )2 in a bomb calorimeter immersed in 1300 g of water. The temperature of the water rises from 25 to 30.2 degrees C. The heat of combustion of benzoic acid is -26.4 kJ/g. The heat capacity of water is

    asked by Kim
  79. math

    Alice plays basketball. In one game she shoots 21 free throws and makes 81.25% of them. Estimate how many free throws she makes.

    asked by Lawrence
  80. Advanced Accounting

    Mr. Right and Mr. Wrong own an antique store in a partnership. They share profits and losses equally and receive an annual salary of $50,000, as per the partnership agreement. Mr. Right travels the country buying antiques. Mr. Wrong manages the store. From

    asked by Angie
  81. Advanced Accounting

    Mr. White (invested $20,000) and Mr. Black (invested $10,000) are in a partnership to run a marketing firm. They share profits and losses in the ratio of 2:1, which is also the ratio of their initial investment in the business. Mr. White manages the office

    asked by Angie
  82. Advanced Accounting

    GAAP rules are clear about when a company needs to consolidate or not, but companies tend to find loopholes to circumvent this rule. GAAP clearly indicates that consolidated financial statements are “usually necessary for a fair presentation when one of

    asked by Angie
  83. Physics

    A compound known as cubic boron nitride has a similar structure to that of. A diamond .wat properties do u expect it to have??

    asked by Jessica
  84. Algebra

    The grade of a highway up a hill is 50%. How much change in horizontal distance is there if the vertical height of the hill is 175 feet?

    asked by Chris
  85. Calculus

    Evaluate integral of x times the square root of (x-4) dx I got u-(8u^(3/2) over 3) Can anyone check this for me?

    asked by Anon
  86. Math

    A triangular prism has an equilateral triangle as its base. The base of the triangle is 10cm and its height is 10cm. The length of the prism is also 10cm. Find it's surface area

    asked by Cherie
  87. poetry

    Can anbody tell me what personification is please.

    asked by lauren
  88. social studies

    What is the population of:Nile Valley,Ganges Valley and Eastern China

    asked by Alice
  89. grade 12 AP calculus

    for f(x= -1/4x4-1/3x3+2x, use analytic method to find the exact intervals on which the function is a)increasing, b)decreasing, c)concave up, d)concave down, then find any e)local extreme values, f)inflection points

    asked by Alannah
  90. college algebra

    1. for the given slope-inntercept equation of the line with the following properties parallel to the line y=7; containing the (-3,5) 2. write the equation of the circle in standard form. find the center, radius, intercepts. x^2+y^2+16x-18y+145=25 please

    asked by confused-steve please
  91. Calculus

    Evaluate integral of x times square root of (2x-1)dx

    asked by Anon
  92. Math

    Find the equation of the line that contains the point (-4,-6) and is parallel to the line that has the equation x+4y=5 Find the equation of the line that contains the point (9,7) and is perpendicular to the line that has the equation 2x-3y=3

    asked by Jill
  93. statistics

    Scores on the ACT college entrance exam are Normally distributed with a mean µ = 20 and standard deviation σ = 5. An SRS of 25 ACT scores is selected, construct a 95% Confidence Interval for the sample mean (X-Bar) and interpret your result.

    asked by Alyssa
  94. Chemistry

    A hungry backpacker needs to boil 150 mL of water to prepare a cup of Ramen Noodles. The filtered river water is at a temperature of 14.2 oC. The pressure is 760 mm Hg and he wants to eat the chicken flavored noodles. How many mL of his liquid butane

    asked by Veronica
  95. English - Poetry

    2. The capital words in the following excerpt are an example of which literary element? "And both that morning equally LAY IN LEAVES no step had trodden black." a. rhyme b. rhythm c. alliteration d. simile 3. The following excerpt is an example of which

    asked by Shaquandala B.
  96. Chemistry

    Compute the ƒ´Hrxn for the following: CH3OH „³ H2CO + H2 Carbon is the central atom on both the starting material and the product.

    asked by Veronica
  97. Chemistry

    Strontium metal is responsible for the red color in fireworks. Fireworks manufacturers use strontium carbonate, which can be produced by combining strontium metal, graphite (C), and oxygen gas. The formation of one mole of SrCO3 releases 1.220 x 103 kJ of

    asked by Veronica
  98. Physics

    Monochromatic light of an unknown wavelength passes through a single slit of width 5.59 μm and forms an interference pattern on a screen 1.26 m away.  The width of the central bright fringe of the interference pattern is 18.8 cm.  The same light is

    asked by Alphonse
  99. chemistry

    Determine how many milliliters of 0.255 M HClO4 will be required to neutralize 48.56 g Ca(OH)2 according to the reaction: 2HClO4(aq)+Ca(OH)2(s)=CA(ClO4)2(aq)+2H2O(l)

    asked by johnel
  100. Physics

    An X-ray photon scatters from a free electron with negligible initial kinetic energy at an angle of 121.2 degrees relative to the incident direction.   (Take the Compton wavelength of the electron to be 2.43 pm, and all other constants/conversions to

    asked by Alphonse
  101. Physics

    An X-ray scattering from an electron with negligible initial kinetic energy is observed to undergo a change in wavelength by 2.561 pm.  i.e.  The scattered X-ray photon has a wavelength 2.561 pm larger than the incident X-ray photon.   Find the

    asked by Alphonse
  102. Physics

    An X-ray scattering from an electron with negligible initial kinetic energy is observed to undergo a change in wavelength by 2.561 pm.  i.e.  The scattered X-ray photon has a wavelength 2.561 pm larger than the incident X-ray photon.   Find the

    asked by Alphonse
  103. Math

    A 605-kg racing car completes one lap in 14.3 s around a circular track with a radius of 40.0 m. The car moves at constant speed. a) What is the acceleration of the car? (b) What force must the track exert on the tires to produce this acceleration?

    asked by Noah
  104. Physics

    Observing electron interference through an ordinary macroscopic two-slit experiment would be extremely difficult and would require very slowly moving electrons.  (Slow for an electron means < 10^3 m/s.)   How slowly would electrons have to move through

    asked by Alphonse
  105. Physics

    Steel Phantom is a roller coaster in Pennsylvania that, like the Desperado in Nevada, has a vertical drop of 68.6m Suppose a roller-coaster car with a mass of 1000 kg travels from the top of that drop without friction. The car then decelerates along a

    asked by Anonymous
  106. Physics

    A powerboat heads due northwest at 11 m/s relative to the water across a river that flows due north at 5.4 m/s. What is the velocity (both magnitude and direction) of the motorboat relative to the shore?

    asked by Noah
  107. Physics

    The kinetic energy of a massive particle is equal to the energy of a photon.  The massive particle moves at 1.49 % the speed of light.     What is the ratio of the photon wavelength to the de Broglie wavelength of the particle?  (Assume the standard

    asked by Alphonse
  108. Physics

    An airplane flies due south at 185 km/h relative to the air. There is a wind blowing at 68 km/h to the east relative to the ground. What are the plane's speed and direction relative to the ground?

    asked by Noah
  109. Calculus

    Evaluate Integral of (lnx)^4/x dx when b is E and a is 1

    asked by Anon
  110. Physics

    A metal surface is struck with light of wavelength 430 nm releasing a stream of electrons.  If the 430 nm light is replaced by 380 nm light of the same intensity, what is the result? a. no change to the emitted electrons b. emitted electrons are more

    asked by Alphonse
  111. trig

    A 600,000-cell bacteria culture is needed for a lab experiment, but you only could purchase 1,000 cells. If the cells double each day, exactly how long will it be before the experiment can be run? Create a model for the bacteria. If the experiment is in

    asked by Amanda
  112. Programing using Raptor ( Computer Logic)

    Create a program that determine the shipping cost for an order based on the following table: From $0.00 $20.00 $50.00 $75.00 To $19.99 $49.99 $79.99 $1000.00 Price $2.95 $3.95 $4.95 Free

    asked by Adam
  113. programming (using raptor)

    Create a program that determine the shipping cost for an order based on the following table: From $0.00 $20.00 $50.00 $75.00 To $19.99 $49.99 $79.99 $1000.00 Price $2.95 $3.95 $4.95 Free

    asked by CJ
  114. math

    2X plus 14Y plus 5 equals?

    asked by chet
  115. math

    if 20%of the people in school use the emergency room at the hospital in one year. find the probabilities for a sample of 8 people

    asked by Anonymous
  116. Math

    The grade of a highway up a hill is 50%. How much change in horizontal distance is there if the vertical height of the hill is 175 feet?

    asked by Anon
  117. Science

    What in soda generates electricity? What about in water?

    asked by Fredie
  118. math

    Anna and Jamie were at track practive. The track is 2/5 kilometers around. Anna ran 1 lap in 2 minutes. How many minutes does it take Anna to run one kilometer?

    asked by Liam
  119. math

    what is solution- 1 to 19 odd number add any 5 number total is 50. ?

    asked by r!!?@rd
  120. science

    what are the forces on two charges of +0.60 C and +2.0 C, respectively, if they are separated by a distance of 3.0 m?

    asked by Anonymous
  121. math

    Irena is training for an upcoming triathlon and plans to run 12 miles miles today. Jorge offered to ride his bicycle to help her maintain her pace. If Irena wants to keep a steady pace of 6.5 minutes per mile, how fast should Jorge ride in miles per hour?

    asked by deborah
  122. ap chemistry

    A calorimeter contains 20.0 of water at 12.5 . When 2.20 of (a substance with a molar mass of 59.0 ) is added, it dissolves via the reaction and the temperature of the solution increases to 27.5 . Calculate the enthalpy change, , for this reaction per mole

    asked by emily
  123. college physics

    An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. A 400-g sample of silver at an initial temperature of 87°C is placed in the water. The stirrer is used to stir the mixture gently until it reaches its final equilibrium

    asked by cat
  124. college physics

    A 55-kg woman cheats on her diet and eats a 465-Calorie (465 kcal) jelly doughnut for breakfast. (c) If the human body is only 24% efficient in converting chemical energy to mechanical energy, how many stairs must the woman climb to work off her breakfast?

    asked by cat
  125. Algebra

    Find P(rolling 2 or 5) with one number cube. A. 1 B. 1/6 C. 1/3 D. 1/2

    asked by Layla
  126. Physics! Case II

    A woman at an airport is pulling her 25.0 kg by a strap at an angle of 25 ° above the horizontal as shown in figure Fig. P5.44. She pulls on the strap with a 45.0 N force, and friction is negligible. What is the acceleration of the suitcase? ___m/s^2

    asked by Sophia
  127. math

    can someone tell me how you figure at interest rates and number of periods, on income for 30 days. need help thanks

    asked by jojo
  128. History

    What is Jean Pierre Blanchard most known for in history? 1) *invented the steam engine 2) *first man to swim the English channel 3) *first successful hot air balloon flight 4) *discovered bacteria

    asked by Alexa=( plzz answer!!
  129. General Chemistry I

    A sample of a compound containing only Br and O reacts with an excess of H2 to give 6.601 g of HBr and 3.919 g of H2O. What is the empirical formula of this compound? a. BrO b. BrO2 c. Br2O d. BrO3 e. None of the above I already know the answer is (e), but

    asked by Emily
  130. social studies

    Multiple Choice 1. While Earth's orbit around the sun takes roughly 365 days, a single rotation of Earth takes about 8 hours. 24 hours. 1 month. 12 months. 2. During the summer solstice in the United States, the ______ _______ is tilted farthest toward the

    asked by Sammy=( plzz answer!!
  131. CHEMISTRY

    WHAT IS THE PH OF 0.50 M HC10? KA OF HC10 IS 3.5X10-8

    asked by KRIS
  132. math

    The demand function for a certain brand of CD is given by the following equation where p is the wholesale unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. p=-0.01x^2-0.1x+6 Determine the consumers' surplus if

    asked by shannon
  133. MATH

    Use cross products to see if each pair of ratios forms a proportion. Replace each box with = or ≠. 1. seven-fifths and fifteen-tenths ( = ≠ 2. six-eighths and fifteen-twentieths = ≠ Solve each problem. 3. two-thirds equals twelve over x x = 18 x = 12

    asked by deborah
  134. accounting

    Ihave recently closed my retail business. While operating I only expensed my items purchased for resale when they were sold. So my inventory is personally owned. What do I declare as ex-tax inventory now that my business is closed... $0?

    asked by Jay
  135. math

    The management of Ditton Industries has determined that the daily marginal revenue function associated with selling x units of their deluxe toaster ovens is given by the following, where R '(x) is measured in dollars/unit. R '(x)=-0.1x-40 (a) Find the

    asked by shannon
  136. chemistry

    what theory describes how negatively charged electron orbitals orient around a positvely charged nucleus?

    asked by Erin
  137. accounting and taxes

    I recently closed my retail business which was very small... I chose not to sell my equipment as I can still use it at home as a hobby for myself. What do I put as furniture and equipment sold on my BOE form? Do I have to buy the equipment from the

    asked by Jay
  138. Chemistry

    What type of bonds(sigma or pi) and how many of each are used to form a triple bond?

    asked by Erin
  139. 6th grade science

    Which is a method of relative dating? A. examining historical records to determine when a volcano erupted B. using fossils to determine the oldest rock layer in a canyon C. measuring the depth of tree bark D. using radioactive isotopes to calculate the age

    asked by luv history
  140. Chem

    2Fe(SO4)3+6koh--->2Fe(OH)3+3k2(SO4) if you started with 12.3 g of potassium hydroxide and a sufficient amount of iron III sulfate how many grams of iron III hydroxide will form?

    asked by hanah
  141. math

    The ladders shown below are standing against the wall at the same angle. How high up the wall does the longer ladder go? (All measurements are in feet.) ladders 11.25 ft 12.5 ft 14 ft 14 ft 2. The pair of polygons is similar. Find the value of x. polygons

    asked by Steve Plzzz Help now !!
  142. Chemistry

    What is the electronic geometry of a central atom with 4 electron pairs?

    asked by Kevin
  143. Check my answers

    1. The division of Earth’s history into smaller units makes up the ____. eras geologic time scale*** periods sequence of events 2. Today, some scientists think that ____. birds evolved from dinosaurs dinosaurs evolved from fish birds evolved from

    asked by Jman
  144. physics

    Two balls have their centers 2.0 m apart. One ball has a mass of m1 = 8.3 kg. The other has a mass of m2 = 5.9 kg. What is the gravitational force between them? (Use G = 6.67 10-11 N · m2/kg2.)

    asked by Danny
  145. chemistry

    A chemist must dilute of M aqueous magnesium fluoride solution until the concentration falls to M . He'll do this by adding distilled water to the solution until it reaches a certain final volume. Calculate this final volume, in liters

    asked by jay
  146. physics

    Tom has a mass of 69.0 kg and Sally has a mass of 54.0 kg. Tom and Sally are standing 20.0 m apart on the dance floor. Sally looks up and sees Tom. She feels an attraction. If the attraction is gravitational, find its size. Assume that both Tom and Sally

    asked by Danny
  147. math

    [(5a)^x]^3b/(5a)^2bx.(4c)^bx

    asked by Nana
  148. Chemistry

    What hybrid orbital is the result of mixing a 1s orbital and 2p orbitals?

    asked by Kevin
  149. math

    What is the degree of the polynomial -2?

    asked by john
  150. Physics

    It takes you 13.5 minutes to run 8 full laps around a 400m track. Find your average speed and average velocity for the run, both in m/s.

    asked by Skylar
  151. math

    how many gallons would a hole 100ft deep by 6ft wide hold

    asked by mark
  152. ap chem

    A calorimeter contains 20.0 of water at 12.5 . When 2.20 of (a substance with a molar mass of 59.0 ) is added, it dissolves via the reaction and the temperature of the solution increases to 27.5 . Calculate the enthalpy change, , for this reaction per mole

    asked by JOSH
  153. Science

    How did plate tectonics affect the evolution of dominant animal life during the Mesozoic era?

    asked by Jman
  154. Chemistry 3A

    a sample of methan gas, CH4, occupies 4.50L at a temp of 20.0 degrees celsius. if the pressure is held constant, what will be the volume of gas at a 100 degrees celsius

    asked by Gurjot
  155. Finite Math

    A student dance committee is to be formed consisting of 3 boys and 4 girls. If the membership is to be chosen from 7 boys and 6 girls, how many different committees are possible?

    asked by Chris
  156. Physics URGENT!!!

    The overall length of a piccolo is 30.6 cm. The resonating air column vibrates as in a pipe that is open at both ends. Assume the speed of sound is 343 m/s. (a) Find the frequency of the lowest note a piccolo can play, assuming the speed of sound in air is

    asked by Tia
  157. Physics- Someone Please Help!!!

    A 60.00 cm guitar string under a tension of 46.000 N has a mass per unit length of 0.11000 g/ cm. (a) What is the speed of the wave? (b) What is the fundamental wavelength for this string? (c) What is the fundamental frequency for this string? (d)What is

    asked by Megan
  158. math pls help Ms Sue

    could you pls check my math 6< s +7 -1 j + (-19) 30>j 24.3 > g- (-14.4) 38.7> g f + (-20) > -7 f > 30

    asked by Kyle
  159. central middle

    what do you get as your new length and width if you enlarge a 8 cm by 10 cm photo by a scale factor of 150%

    asked by Anonymous
  160. Chem

    A sample of co2 gas at 90.7 degree celsius has a volume of 300. ml at 810 mmHg. How many moles of co2 are present R=.08206 L atm/mol K 1 atm=760 mmHg

    asked by hanah
  161. English

    Which of the following sentences is punctuated correctly? A.Mom thinks we need to arrive by seven o’clock; but I don’t think that’s necessary. B.We will end up waiting around for the others; that will be boring. C.I think we should get there at eight

    asked by Deborah
  162. Physics

    A 50kg box is sitting on your front porch. The coefficient of sliding friction between the box and floor is .4. You are trying to push the box from the porch into the house. What is the force required to push the box at a constant speed?

    asked by Brittany
  163. Math (trigonometry)

    From a boat on the water, the angle of elevation of the drop of a cliff is 31°. From a point 300 m closer, the angle of elevation is 33°. Find the height of the cliff. the answer should be 2411 m. I had tan31° = h/x+(x-300) tan33° = h/x-300 ->

    asked by Sammy
  164. world history

    how did spain acquire her american empire?

    asked by britt
  165. math

    Decide whether each equation has one solution, no solutions, or infinitely many solutions. 1. 2(x – 3) = 2x one solution no solutions infinitely many solutions 2. 3(y – 3) = 2y – 9 + y one solution no solutions infinitely many solutions 3. 10x – 2

    asked by Jman
  166. I don't understand this chemistry problem?

    The question reads: Place the following elements in order of decreasing atomic size: selenium, chlorine, fluorine, rubidium, calcium, and sulfur. I looked this up on a periodic table and my answer was: Rb, Se, Ca, Cl, F, S. This is still marked wrong, and

    asked by Amy
  167. Math

    A crew of spiders moved into the scary old house and started working at once. They spun 2 webs on the first night, and 7 webs on the second night. On the third night they wove 12 webs. Every night they made 5 more webs than they had made the night before.

    asked by Terry
  168. chemistry

    A buffer is made by dissolving HC2H3O2 and NaC2H3O2 in water. Write an equation that shows how this buffer neutralizes added acid. Express your answer as a chemical equation. Identify all of the phases in the answer.

    asked by amanda
  169. English

    Which of the sentences below is punctuated correctly? A.I have visited three countries including: Spain, Portugal, and France. B.I have visited three countries: Spain, Portugal, and France. C.I have visited three countries; Spain, Portugal, and France. D.I

    asked by Deborah
  170. English

    Multiple choice: A factory might emit? A.pollution. B.smokestacks. C.resources. Is it A or B? not sure - help

    asked by Deborah
  171. Chem

    A sample of co2 gas at 90.7 degree celsius has a volume of 300. ml at 810 mmHg. How many moles of co2 are present R=.08206 L atm/mol K 1 atm=760 mmHg is this correct? PV=nRT (1.07)(0.3)=(44.01)(.08206)(363.7) 0.3424=1313.49 =0.00026068 or 2.61^-4

    asked by hanah
  172. math

    f f + (-20) > -7 f = ?

    asked by Jenny
  173. grade 12 AP calculus

    Sketch a possible graph of a continuous function f that has domain [0,3], where f(0)=-3 and the graph of y=f'(x) is shown. Thank you so much for the help. It is making the concepts far more clear.

    asked by Alannah
  174. Physics- Elena please help!

    A 60.00 cm guitar string under a tension of 46.000 N has a mass per unit length of 0.11000 g/ cm. (a) What is the speed of the wave? (b) What is the fundamental wavelength for this string? (c) What is the fundamental frequency for this string? (d)What is

    asked by Megan
  175. math

    Are there any websites where i can make a 3d shape and see the net for it?

    asked by Anonymous
  176. math

    A motorcyclist used 3.21 liters of gasoline to travel from Greenfield to Milltown. The next day he traveled from Milltown to New Haven, using another 1.95 liters of gasoline. About how much gas did he use on the two trips? a:about 4 liters b:about 3 liters

    asked by Anonymous
  177. Decades question

    What decade is 1512 or 1519 ? Is it the 15oo's ?

    asked by Moby
  178. Ms sue

    please my post

    asked by Jman
  179. physics

    During the spin cycle of a washing machine, the clothes stick to the outer wall of the barrel as it spins at a rate as high as 1800 revolutions per minute. The radius of the barrel is 26 cm. a. Determine the speed of the clothes (in m/s) which are located

    asked by Anonymous
  180. english

    17. Few people know about the complex science behind the construction of elevators. (1 point) demonstrative adjective interrogative adjective indefinite adjective proper adjective

    asked by Anonymous
  181. math VERY URGENT

    Are there any websites where i can make a 3d shape and see the net for it?

    asked by Anonymous
  182. science

    Hurry!!!!!!!!!!!!!!!!!!! If you are asked to determine an object’s speed, what information must you have? A. distance and period of time B. distance and change in position C. period of time and direction D. distance and direction

    asked by marie
  183. physics

    A 5.40 Kg package slides 1.47 meters down a long ramp that is inclined at 11.6 degress below the horizontal. The coefficient of kinetic friction between the package and the ramp is = 0.313. Calculate the work done on the package by friction. Calculate the

    asked by clariza gonzalez
  184. Art Please check answers

    1. These two technological advancements of the Industrial Revolution helped lead to the development of Impressionism. the railroads and the printing press the railroads and photography photography and electric lighting** the automobile and electric

    asked by Anonymous
  185. science

    im blank today please help thanks!!!!!!!!!!! It takes a car 1.75 h to go from mile marker 10 to mile marker 115. What is the average speed of the car? A. 1.6 mph B. 60 mph C. 65 mph D. 183 mph

    asked by sara
  186. Finance

    Describe two financial goals that you would want to meet before you begin investing. Explain why you would want to reach those goals first.

    asked by Anonymous
  187. math

    A building 65 feet tall casts a shadow 175 feet long. Ben casts a shadow 14 feet long. How tall is Ben?

    asked by Brandon
  188. 5th grade math hard

    Are there any websites where i can make cubes and see the nets for them?

    asked by Anonymous
  189. Math

    Coach Lewis was training for a marathon After 15 minutes he had run 3 blocks. If he continues at this pace how many blocks will he have run in 1 1/4 hours? A.75 B.15 C.25 D.17 D?

    asked by Jerald
  190. physics

    A block of mass 25.5 kg is released on a ramp with an angle of 31.70 degrees. The coefficient of friction is 0.45. Find the acceleration.

    asked by Jared
  191. science

    Fast help Please Hurry!!!!!!!!!!!!!!!!!!!!!! A bicyclist is in a 50-km race. He says he had an average velocity of 35. What is missing in the cyclist’s velocity? A. units only B. units and distance C. direction only D. units and direction

    asked by sara
  192. Statistics

    Of 5,352 requests for medical records, 4,256 were located in the 20-minute time frame established by the supervisor as a quality improvement indicator. What is the rate of compliance in answering requests for records?

    asked by Anonymous
  193. mathematics

    1 round 234508 to the nearest thousands 2 round 45099 to the nearest thousands 3 round 8650 to the nearest thousands

    asked by alana
  194. English

    chapter 14 sentence check 2... Although everything about the Nazis filled the Dutch spy with ____ (convert), his assignment was to ___(convert)peoples pain.

    asked by Sam
  195. math

    y=mx t b ax t by=c ax t by t c= 0 Need every question for all 3 above how do u do these im so confused i need help! thanks 8) Through (4,0) and slope of -1 0) through (4,5) with slope -8 10) through (-2,4) with slope 7 over 3 11)through (-2,-1) with slope

    asked by zack
  196. Social studies

    If someone were to visit Georgia, what is a popular tourist attraction? Name and describe only one tourist attraction.

    asked by Shion
  197. English

    Read the dialogue. Then rewrite the dialogue on the lines. Add quotation marks and other punctuation and begin new paragraphs where needed Narrative poems are another kind of poetry said Brittany. Narrative poems are my favorite kind of poetry.Dave asked

    asked by Jerald
  198. math

    A 16-ft ladder is placed 4-ft from the base of the building. How high on the building will the ladder reach?

    asked by michael
  199. math stuff

    how do u find the unit rate of a question

    asked by sk8rboi
  200. English

    Read each sentence. Add quotation marks for each title. I am playing Anitra's Dance from "Peer Gynt" at the recital I liked the song "Fireflies" and want to hear it again That magazine article you asked about is "How to Build a Bird Feeder" The assignment

    asked by Jerald
  201. fraction

    I have 3 dimes 2 nickels and1 penny what fraction is represented by dimes

    asked by Anonymous
  202. statistics

    Commuters were asked how many times a week they stop for coffee on their way to work. A survey found a mean of 3 times a week with a standard deviation of 0.55. What is the probability that in a group of 36 people they stop between 2.8 and 3.25 times per

    asked by Alley
  203. Physics

    An automobile of mass 2000 kg is driven into a brick wall in a safety test. The bumper behaves like a Hooke’s-law spring. It has an effective spring constant of 5 × 106 N/m, and is observed to compress a distance of 8.7 cm as the car is brought to rest.

    asked by Shelly
  204. algebra

    using substitution how to solve x + 4y = 8 2x + 5y = 29

    asked by noah
  205. statistics

    Shoppers were asked how much money they were going to spend today in the mall. The mean dollars was $250 with a standard deviation of $15. In a group of 64 people, what is the probability that they spent less than $240?

    asked by Alley
  206. elementary

    Draw a picture Draw two ways to show 43 using place-value blocks.

    asked by Latha
  207. math

    A box containing 5 red balls and 3 green balls weighs 43 g. When the box contains 3 red balls and 5 red balls it weighs 37g. When it contains one ball of each it weighs 19g. What is the mass of the box and of each ball.

    asked by Bogusgirl
  208. alebraic

    5×10=60-

    asked by anonymous
  209. math

    Ron is tiling a countertop. He needs to place 54 square tiles in each of 8 rows to cover the counter. He wants to randomly place 8 groups of 4 blue tiles each and have the rest of the tiles be white. How many tiles will Ron need?

    asked by Michal
  210. Social Studies

    A-Cabinet B-Checks and Balances C-Commander in Chief D-Constitution E-Congress F-Executive Branch G-House of Representative H-Impeachment I-Judicial Branch J-Legislative branch K-Senate L-Supreme Court 1. A system in which no one government branch has too

    asked by Jerald
  211. Stats

    Commuters were asked how many times a week they stop for coffee on their way to work. A survey found a mean of 3 times a week with a standard deviation of 0.55. What is the probability that in a group of 36 people they stop more than 3.2 times per week?

    asked by Alley
  212. College Algebra

    The year he turned 18, Thomas Edison invested 0.8% compounded hourly. How much money would the account have now? Explain all steps. Be sure to include an explanation of how you found out when Edison turned 18 and how you calculated n. Part of the credit is

    asked by A
  213. Statistics and Probability

    A survey shows that 25% of people listen to the radio daily. If a group of 125 people are surveyed, what is the probability that more than 40 people will have listened to the radio today?

    asked by Alley
  214. Math

    A local motel has 100 rooms. The occupancy rate for the winter months is 60%. Find the probability that in a given winter month more than 65 rooms will be rented. Use the normal distribution to approximate the binomial distribution.

    asked by Alley
  215. Math

    Based on past studies, a car manufacturer has found that 83% of new car buyers will sell their new car within the next four years. If 100 new car buyers are randomly selected, what is the probability that at least 90 will sell their cars within the next

    asked by Alley
  216. Stats

    A survey was conducted to determine the number of hours people listen to the radio. While most of the listening is in the car, it turns out that the mean is 2.5 hours with a standard deviation of 0.75 hours. Find the probability that the sum of 100 values

    asked by Alley
  217. Statistics and Probability

    Commuters were asked how many times a week they stop for coffee on their way to work. A survey found a mean of 3 times a week with a standard deviation of 0.55. Find the probability that the sum of 100 values is more than 290.

    asked by Alley
  218. Statistics

    Commuters were asked how many times a week they stop for coffee on their way to work. A survey found a mean of 3 times a week with a standard deviation of 0.55. Find the probability that the sum of 121 values is less than 350.

    asked by Alley
  219. English

    This is new to me if someone could please explain how to do this it would be great. Sentence Patterns:draw vertical lines to identify the slot boundaries in the following sentences; label each slot with its form and function. In parentheses at the end of

    asked by Amy
  220. Trigonometry

    a black bordering sapphire street is a right triangle. you start walking around the block, taking 125 places on sapphire street and 102 paces on diamond street. a.)At what angle do diamond and sapphire street interest ? b.)How Many Paces must you take on

    asked by Lelouch
  221. calculus

    find the limit u-> sqr(u^4 + 3u+ 6)

    asked by Jason
  222. Chemistry 12

    15. The concentration of hydroxide ions in a solution of nitric acid 0.2 M is: a. 2 x 10-14 M b. 5 x 10-14 M c. 5 x 10-7 M d. 2 x 10-1 M 16. Aqueous solutions of strong acids and strong bases: a. are good electricity conductors b. make litmus paper become

    asked by Need Help
  223. science

    Grapic organizer.show details that support this main ideals.thermal energy moves through solids liquid, gases and space

    asked by anonymous
  224. science

    Draw conclusion. Tasha had a foam cup of hot cocoa The cocoa stayed hot and the cup didn't get too hot to hold explain why

    asked by anonymous
  225. Trigonometry

    A satellite orbiting the earth in a circular path stays at a constant altitude of 100 kilometers throughout its orbit. Given that the radius of the earth is 6370 kilometers, find the distance that the satellite travels in completing 70% of one complete

    asked by Karen
  226. Trigonometry

    A ship is passing through the island of corregidor. At its closest point of approach radar determine that it is 2,400 m away. Later the radar determines that it is 2,650 m away . a.)By what angle did the ship's bearing from corregidor change ? b.)How far

    asked by Lelouch
  227. math calculus

    . Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid.

    asked by Paige
  228. math calculus

    . Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid.

    asked by Paige
  229. English

    I watched a rerun of "Flop Goes the Joker" from Batman. Mom is reading "Best Cell Phone Buys"in that magazine. Dad remembers reading "The Tiger Who Would be King." "Abuelito Who" is on page 300. Lawrence Yep wrote "Breaker's Bridge."

    asked by Jerald
  230. Health 8R - help!

    Explain how siomese twins form please help

    asked by Laruen
  231. Trig

    A population of animals oscillates annually from a low of 1300 on January 1st to a high of 2200 on July 1st, and back to a low of 1300 on the following January. Assume that the population is well-approximated by a sine or a cosine function. a. Find a

    asked by Alex
  232. Chemistry

    What's the lewis dot structure for CH2Cl2 ??

    asked by billnyetho
  233. Physics

    After a day of testing race cars, you decide to take your own 1590 kg car onto the test track. While moving down the track at 10.0 m/s, you uniformly accelerate to 26.0 m/s in 10 s. What is the average net force that you have applied to the car during the

    asked by Mat
  234. Trigonometry

    Find all solutions between 0 and 2pi to tan(x)=-Squareroot3 exactly.

    asked by Sarah
  235. Trig

    The height of a rider on a Ferris wheel is given by h(t)=12-10c0s(2pi)(t) meters, where t gives time, in minutes of the ride. a. Find the amplitude, midline, and period of the function h. b. During the first two minutes of the ride, find the times when the

    asked by Carrie
  236. Health 8R - help!

    Define abstinence

    asked by Laruen
  237. Science

    What would be a good conductor for a closed circuit?

    asked by Jasmine Scott
  238. advanced math

    The marginal cost of a product can be thought of as the cost of producing one additional unit of output. For example, if the marginal cost of producing the 50th product is $6.20, it cost $6.20 to increase productionn from 49 to 50 units of output. Suppose

    asked by kristina
  239. advanced math

    Solve the equation. 2log_2(x-5)+log_2(2)=5

    asked by kristina
  240. math calculus

    . Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid.

    asked by Paige
  241. Math 8R - HW Qs. Check

    Approximate the square root to the nearest hundredth square root of 155 12. 449 (that's the square root of 155) 12.450 (i round it to the nearest hundredth) am i correct????

    asked by Laruen
  242. advanced math

    Math the equation a single logarithm. Express as factors. ln(x/(x-1))+ln((x+1)/(x))-ln(x^2-1)

    asked by kristina
  243. advanced math

    find the real solutions. 2+the square of (9x-8)=x

    asked by kristina
  244. advanced math

    what is line perpendicular to line 5x+y=57 that goes through the point (10,6).

    asked by kristina
  245. math calculus

    . Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid.

    asked by Paige
  246. math

    Thirteen multiplied by h is one hundred and four.

    asked by Anonymous
  247. math

    Car rental agency A charges $50 per day plus 10 cents per mile driven. Agency B charges $20 per day plus 30 cents per mile driven. For a one-day rental it is cheaper to rent from agency A if you drive more than?

    asked by al la carte
  248. math

    Andy and Sam are saving money to go on their senior trip. The amount of money that Andy will have at the end of each week, w, can be expressed at A(w) = 20w + 300. The amount of money that Sam will have at the end of each week, w, can be expressed at S(w)

    asked by olivia
  249. Math

    How do I solve for L:d=Lh/R1+R2?

    asked by Jaslene
  250. V/CV OR VC/V PATTERN

    Student

    asked by Kim
  251. Physics-bullet travel distance

    A bullet is fired at 45 degrees with respect to horizontal with a velocity of 50 m/s. How long is the bullet in the air? What is the range?

    asked by daryl
  252. calculus

    1. (30 points) Consider a manufacturer whose total cost of producing x items is given by c(x)=10000+5x+1/9x^2. a. What is the average cost function A(x)= c(x)/x? b. How many items should the manufacturer produce in order to minimize average cost? c. What

    asked by michelle
  253. english

    Shortly before the Russian Revolution, an eccentric man named Rasputin became ______as the "mad monk." Because he dressed like a peasant, drank heavily, and rarely bathed, the nobility often felt ____during their encounters” with him at the palace. Yet

    asked by brad
  254. math calculus

    . Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid.

    asked by Paige
  255. Social Studies

    A-Cabinet B-Checks and Balances C-Commander in Chief D-Constitution E-Congress F-Executive Branch G-House of Representative H-Impeachment I-Judicial Branch J-Legislative branch K-Senate L-Supreme Court Advises the president and its members must be approved

    asked by Jerald
  256. math

    If x,y,p,q are points on the circle with radius 6 and xp=yq what is pq? I think the answer is cannot be determined Thanks.

    asked by kris
  257. English

    The "All-American Slurp" is a funny story. Did you say your favorite poem is "Ankylosaurus?" Chapter 4 is "The Black Thing" How many times have you read "Greyling?" The chapter is titled "Ancient Egypt."

    asked by Jerald
  258. geography

    Can you check my answers please? 1. What continents touch the 60 degrees W line of longitude? North America and South America, Antarctica 2. What do green areas on physical maps usually mean? It usually means land or low-lying land areas. 3. What is the

    asked by Reed
  259. precalculus

    how do i graph a hyperbola from the following equation? y^2-x^2-4y+4x-1+0

    asked by alyse
  260. math calculus

    . Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid.

    asked by Paige
  261. physics university

    For a helium atom containing two protons, two neutrons and two electrons: A)Calculate the first energy levels(n=1,2,3,4,5)(answers (-54.4eV, -6.04eV, -3.4eV, -2.176eV) b)Calculate the frequency in Hz of a proton emitted from n=2 to n=1 (answer 9.86x

    asked by chanty
  262. grammar

    can you tell me if sentence or not. 1the women made a cup of coffee. 2An addiction she had since her teen years. 3Never before starting her work day without coffee. 4But still wanted coffee

    asked by jojo
  263. Trigonometry

    A black bordering Sapphire St. is a right triangle. You start walking around the block, taking 125 paces on sapphire st. and 102 paces on Diamond st. a.) At what angle do Diamond and Sapphire Street Intersect ?

    asked by Lelouch
  264. math calculus

    . Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid.

    asked by Paige
  265. trogonometry

    A black bordering Sapphire St. is a right triangle. You start walking around the block, taking 125 paces on sapphire st. and 102 paces on Diamond st. a.) At what angle do Diamond and Sapphire Street Intersect ?

    asked by mae
  266. Math

    What multiplication fact can be found by using arrays for 2x9 and 5x9?

    asked by Ryan
  267. Physics- Help

    Five forces act on an object. (1) 63 N at 90° (2) 40 N at 0° (3) 75 N at 270° (4) 40 N at 180° (5) 50 N at 60° What are the magnitude and direction of a sixth force that would produce equilibrium?

    asked by Mat
  268. Physics- Help

    Five forces act on an object. (1) 63 N at 90° (2) 40 N at 0° (3) 75 N at 270° (4) 40 N at 180° (5) 50 N at 60° What are the magnitude and direction of a sixth force that would produce equilibrium?

    asked by Mat
  269. math calculus

    . Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid.

    asked by Paige
  270. Physics- Help

    Five forces act on an object. (1) 63 N at 90° (2) 40 N at 0° (3) 75 N at 270° (4) 40 N at 180° (5) 50 N at 60° What are the magnitude and direction of a sixth force that would produce equilibrium?

    asked by Mat
  271. Physics

    An object in equilibrium has three forces exerted on it. A 30 N force acts at 90° from the x axis and a 48 N force acts at 60°. What are the magnitude and direction of the third force? . N ° (counterclockwise from the +x direction)

    asked by Mat
  272. physics

    A)Calculate the wavelength of a 5.0kg bowling ball moving at 7.5m/s b)an electro with a mass of 9.11 x 10^-13kg moving at 5.9 x 10^6 m/s.

    asked by chanty
  273. lenguage arts

    similes

    asked by david
  274. English

    Read the sentences then put any words in () that are a title or a foreign expression Dad likes to listen to (Car Talk) on the radio. The (USS Saratoga) was an aircraft carrier. Dad listens to the album (Free As a Bird) We saw the modern sculpture (Flying

    asked by Jerald
  275. lenguage arts

    examples of similes

    asked by david
  276. physics

    wave speed: the violin is a four stringed instrument tuned so that the ratio of the frequencies of adjacent strings is 3:2. (This is the ratio when taken as high frequency to lower frequency.) If the diameter of E string (the highest frequency) on a violin

    asked by zoe
  277. math

    using four different digits, what is the least sum you can add two 2-digit number?

    asked by hanh
  278. math

    The campus vets club is having a raffle and is selling 1,900 tickets. If the people on your floor of the dorm bought 266 of those tickets, what is the probability that someone on your floor will hold the winning ticket? (Enter your answer as a decimal.)

    asked by jacque
  279. pre cal verifying identities

    how do I verify?? sin(x)+cos3(x)=sin(x)-3cos(x)+4cos^(3)x

    asked by bee
  280. 7th grade Social Studies Ms. Sue

    1. Which climate region dominates most of Northern Africa? (1 point) humid continental highland tundra arid 2. What kind of storm covers the largest area? (1 point) rainstorm blizzard hurricane tornado 3. Earth’s climate is affected by latitude,

    asked by Delilah
  281. calculus

    A lamp has a cost function of C(x) = 2500 + 10x, where x is the number of units produced per day and C(x) is in dollars. The revenue function for these lamps is R (X)= 18x−.001x^2. At least 100 lamps and no more than 2000 lamps may be produced per day.

    asked by michael
  282. MATH

    From HOME TO THE FAIR IT'S 70 MILES, I have driven about 30 miles at 40 miles per hour. how many hours would it take me to finish the remaining miles?

    asked by Lisa
  283. Math (trigonometry)

    MONDAY  December 3, 2012 SCHOOL SUBJECTS Art Business Computers English Foreign Languages Health Home Economics Math Music Physical Education Science Social Studies GRADE LEVELS Preschool Kindergarten Elementary School 1st Grade 2nd Grade 3rd Grade 4th

    asked by Sammy
  284. math

    If your expected value when playing a $1 game of chance is $0.03. How much should you have netted after playing the game 160 times?

    asked by jacque
  285. 7th grade math Ms. Sue please

    I have absolutely NO IDEA how to solve this problem!!?! Please help! Answer the following question: Sometimes people say “Give 110% of your effort.” Is it possible to give 110% of your effort? Is there ever a situation where you might have a percent

    asked by Delilah
  286. Language

    I need to correct the following sentence and I havving trouble with it! This is how it is written and there is to be 6 corrections at least in it. out no loitering screamed grubble the greedy shopkeeper This is how I think it should be am I right??? "Out!"

    asked by Dawn
  287. algebra

    explane, jen and heather went to lunch. when the bill came. jen discovered that she had only 8 dollars. heather had enough money to pay the other paqrt, or 3/5 of the bill.

    asked by gus
  288. EOG science

    Javier lives on the west coast of the U.S near San Francisco. What are the temperatures most likely like where he lives? A)the temperature is always hot. B)the temperature is always below freezing. C)the temperature is moderate and doesn't change much.

    asked by May
  289. math calculus

    . Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid.

    asked by Paige
  290. Chem

    What is the molarity of a solution made by dissolving 4.14 g of sodium acetate in water and diluting to 750. mL? (molar mass NaC2H3O2 is 82.0 g/mol.) .67137, but that wasn't right. An open-ended mercury manometer is used to measure the pressure exerted by

    asked by Anonymous
  291. math

    A history teacher gives a 22 question T-F exam. In how many different ways can the test be answered if the possible answers are T or F, or possibly to leave the answer blank?

    asked by jacque
  292. accounting

    Assume that you are the president of Gaslight Company. At the end of the first year (December 31, 2011) of operations, the following financial data for the company are available:

    asked by Anonymous
  293. math

    how can i find common denominators?

    asked by Anonymous
  294. English

    Need help correcting this sentence there is at least 6 errors. out no loitering screamed grubble the greedy shopkeeper.

    asked by Dawn
  295. English

    Read each sentence. Then underline each term that calls for italics The twins like to watch Tomas & Friends Thomas & Friends? This book, The Higher Power of Lucky, won an award, and it is a good read. The higher Power of Lucky? Do you mean course or

    asked by Jerald
  296. sociology 101

    which three of the most important sociological thinkers and use those ideas to explain the Senge, Hawken et al, and Kemmis readings

    asked by mel
  297. English - ms. sue

    ms. sue i post question about story identities. i not get what it mean when it say what it mean to have identity? also the first word that story start with that be normally - why that word really signficant? because it tell that this not be some ordinary

    asked by Mohammad
  298. math

    help me on ratios please its homework

    asked by yolanda
  299. Chemistry

    The quantity of antimony in an ore can be determined by an oxidation-reduction titration with an oxidizing agent. The ore is dissolved in hot, concentrated acid and passed over a reducing agent so that all the antimony is in the form Sb3 (aq). The Sb3 (aq)

    asked by Anon
  300. Math

    Derek threw the football 36 2/3 yards during Tuesday's game. The next play he threw the football 2 5/6 yards less. How far was his second pass thrown? 33?

    asked by Jerald
  301. math calculus

    . Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid.

    asked by Paige
  302. chemistry

    what is the external pressur, if ethanol is boiling at a temperature of 70 degrees celsius

    asked by paul
  303. Calculus

    When an electronics store prices a certain brand of stereos at p hundred dollars per set, it is found that q sets will be sold each month, where q2 + 2 p2 = 41. a. Find the elasticity of demand for the stereos using implicit differentiation. b. For a unit

    asked by jacob
  304. physics

    How tall would a water-filled manometer have to be in order to measure blood pressures up to 300mm Hg?

    asked by Anonymous
  305. math calculus

    . Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid.

    asked by Paige
  306. Chemistry

    Draw a diagram of the Born-Haber cycle for potassium bromide. Include labels (DHf, DHSub, DHVap, DHI.E., DHE.A., DHL.E, etc.) of the different energies involved. Include the equation needed showing how the lattice energy would be calculated (DHL.E,).

    asked by Jerett
  307. CHM

    Predict whether the following bonds are ionic, covalent, or polar covalent based on the bonding atoms electronegativities: N2 The Al-O bond in Al2O3 MgO CuS

    asked by Lisa
  308. science

    Sandy walked to school this morning because it was nice and warm outside.When school let out, a cold front was moving through. What was the weather most likely as she walked home? A)warmer C)the same B)cooler D)it is unpredictable my answer is A),am i

    asked by May
  309. MATH

    i don't know how to divide

    asked by YOLANDA MATEOS
  310. Chemistry

    Arrange the different types of forces in order of increasing energy. Covalent, Hydrogen Bonding, Ion-Dipole, Dipole-Dipole, Induced Dipole-Dipole (induced and London dispersion), and Ionic Bonding

    asked by Luis
  311. Math

    A support beam 15 m long is cut into two piece, the lengths of which are in the ratio of 2 to 3. What is the length of each piece?

    asked by Walter Williams
  312. Math

    Estimate each quotient 766÷8 $31.75÷8

    asked by Joe
  313. math calculus

    . Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid.

    asked by Paige
  314. Chemistry

    Aluminum reacts with excess copper(II) sulfate according to the unbalanced reaction Al(s) + CuSO4(aq) −→ Al2(SO4)3(aq) + Cu(s) If 2.21 g of Al react and the percent yield of Cu is 40.8%, what mass of Cu is produced? Answer in units of g. I got

    asked by Anonymous
  315. algebra

    a^6b^8-a^4b^3+a^3b^5-a^3b^3 ???

    asked by Addri
  316. pre algebra

    Actual train size 40 feet gives a model size of 3 inches which scale was used?

    asked by gloria
  317. Ratio

    A jar contains 2 red marbles,6 blue marbles,4 white marbles, and 12 black marbles. What is the ratio of white marbles to all marbles?

    asked by Ana
  318. math

    the product of twenty-five and the sum of a number and four

    asked by maley
  319. MATH RATIO AND RATE

    WHATS 102 OVER 14 I NEED A ANSWER PLEASE SORRY ONLY THIS ONE

    asked by YOLANDA MATEOS
  320. MATH

    I DON'T KNOW HOW TO PLUS IM ON A COMPUTER MS.SUE

    asked by YOLANDA MATEOS
  321. math calculus

    . Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid.

    asked by Paige
  322. variables and expressions

    explain what the expression 6x means

    asked by bella
  323. Geometry

    Prove that in any triangle ABC, the median from A to the segment joining the midpoints of AB and AC bisect each other.

    asked by Delia
  324. math calculus

    . Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid.

    asked by Paige
  325. Geometry

    Using vectors, show that the centroid of a regular pyramid with a rectangular base lies on the altitude to the base and is 4/5 of the altitude's length from the vertex.

    asked by Delia
  326. Lewis Dot Structure?

    I need to draw a Lewis Dot Structure for each ion or molecule: PO4-3 CN- SO3-2 ClO2- N2H2 N2H4 C2H2 C2H4

    asked by Amy
  327. math calculus

    . Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid.

    asked by Paige
  328. math calculus

    . Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid.

    asked by Paige
  329. Math

    Write two word phrases for 6 + v

    asked by Gio
  330. math,

    how do i answer 102 over 14 in simplest form and ratios

    asked by YOLANDA MATEOS
  331. Physics

    Early skeptics of the idea of a rotating Earth said that the fast spin of Earth would throw people at the equator into space. The radius of Earth is about 6400 km. Show why this objection is wrong by determining the following information. (a) Calculate the

    asked by Caleb
  332. Math

    Writing to explain if you know that 4 x 5 = 20, how can you use the Commutative (Order) Property to find 5 x 4?

    asked by Evelyn
  333. tolentino

    input 1 output -2 input 2 output 8 input 3 output -32 input 4 output 128 what is the rule? please help.

    asked by jim
  334. Algebra

    The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 172 and a variance of 9. The material is considered defective if the breaking strength is less than 163 pounds. What is the probability that a single,

    asked by Angela
  335. Chemistry

    You dissolve 17.1 gms of sucrose (sugar) in 100 mL of ethanol 20ºC. What is the molarity (M)?

    asked by T
  336. statistics

    Scores on an English test are Normally distributed with a mean of 78% and a standard deviation of 4.5%. Find the Value of the first quartile.

    asked by ray
  337. math calculus

    . Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid.

    asked by Paige
  338. Lab Questions

    1. Use the Van der Waals equation to calculate the pressure exerted by 1.00 mol of Cl2; in 22.41 L at 0.0 degrees C. The constants for Cl are a = 6.49 L2 atm/mol2 and b = 0.0526 L/mol. 2. How much potassium chlorate is needed to produce 20.0 mL of oxygen

    asked by Jayden
  339. chemistry

    what's the formula for specific heat

    asked by sa
  340. Physics

    Archimedes purportedly used his principle to verify that the king's crown was pure gold, by weighing the crown while it was submerged in water. Suppose the crown's actual weight was 14.0 N. The densities of gold, silver, and water are 19.3 g/cm^3, 10.5

    asked by Victor
  341. chemistry

    A 0.286g sample of Zn was used to produce H2(g)by the reaction. Zn(s)+ 2HCl(aq)> ZnCl2(aq) + H2(g) The barometric pressure was recorded as 761.6mm Hg and room temperature was 20degreesC. When the water levels of the eudiometer tube and graduated cylinder

    asked by joann
  342. precal

    when solving for all solutions how do I work out this problem: cos4(alpha)=cos2(alpha) and when verifying each identity how do I complete this problem: sin (alpha/2)=sec alpha -1/2sin (alpha/2)sec alpha

    asked by bee
  343. physics

    A block starts at rest and slides down a fric- tionless track. The acceleration of gravity is 9.81 m/s2 . It leaves the track horizontally, striking the ground (as shown in the figure above). b b b b b b b b b b b b 502 g h 2.2 m 4.4 m 9.81 m/s2 a) At what

    asked by scott
  344. math

    how do i do 102 over 14 in simplest form

    asked by YOLANDA MATEOS
  345. math

    how do i divide larg numbers

    asked by YOLANDA MATEOS
  346. Grammar..

    1. Is this correct (grammatically)? I bought bananas, strawberry, honey, and some books. ( also are the commas placed correctly?) (And do you call punctuations in English mechanics?) 2.Do I use the word "had" to emphasize something? Ex: The communist had

    asked by Anonymous
  347. Algeba II

    3x^2+4x^2-7x+2

    asked by Erick
  348. Hamilton

    Translate ten less than half of a number

    asked by crystal
  349. trigonometry

    1)Solve and write in standard form: 4x^2-4x+21=0 2)Find the standard form of the complex number. 8(cos pi/2 + i sin pi/2) Thanks everyone!

    asked by mikey
  350. trigonometry

    1) Perform the operation and leave the result in trig. form. [3/4(cos pi/3 + i sin pi/3)][4(cos 3pi/4 + i sin 3pi/4)] Thanks

    asked by mikey
  351. math

    PIZZA:64 MACCARONI AND CHEESE:14

    asked by YOLANDA MATEOS
  352. Chemistry

    a 110 g solid sample that is a mixture of CaCO3 and CaCl2 is reacted with 1.50 L of 1.45M HCl. Of the calcium salts, only calcium carbonate reacts with HCl- the reaction forms CaCl2 and CO2. The excess/unreacted HCl requires 0.850 L of 0.543 M NaOH to

    asked by Cristian
  353. Math

    -7x5y+4x3y

    asked by Rayyan
  354. Chemistry

    Concentrated aqueous ammonia contains 1.00 mol NH3 dissolved in 2.50 mol H2O. What is the mole fraction of NH3 in concentrated aqueous ammonia?

    asked by T
  355. spell

    ONMATOPIEA IS IT CORREC

    asked by YOLANDA MATEOS
  356. Chemistry

    You dissolve 20.0 gms of sucrose (sugar) in 200 mL of ethanol 20ºC (density of ethanol at 20ºC is 0.789 gm/ml). What is the mass % of the solute?

    asked by T
  357. trigonometry

    Simplify and write in standard form. 1.) (radical 3 + i radical 15)(radical 3 - i radical 15) 2.) 8 + 16i / 2i Thanks again everyone. Any help is appreciated.

    asked by mikey
  358. calculus

    determine the volume of the solid of revolution generated by revolving the region bounded by y=x^3-x^5, y=0, x=0 and x=1 about the line x=3

    asked by jump
  359. geography

    Can you check my answers please? 1. Who has sunrise first, eastern or western Europe? Eastern Europe 2. What is the capital of the country that has a border with Hungary and a coastline on the Black Sea? Bucharest, Romania 3. Is the Arctic Circle closer to

    asked by Reed
  360. psychology

    why might recent research have indicated an increase in the total number of cases os alzheimer's disease in the past few yearss

    asked by Anonymous
  361. Chemistry

    Balance the following equation for a half reaction that occurs in acidic solution. Use e– as the symbol for an electron. Mo^3+ -> MoO2^2+ Is the answer 2O+2Mo^3+ -> MOO2^2++3e^-?

    asked by Anonymous
  362. cooking

    i need help how to cook an cake

    asked by YOLANDA MATEOS
  363. pre-algebra

    what is 7 divide 98 into

    asked by christian manzano
  364. Finance

    On July 1, 2011, Jackson Company exercises a $5,000 call option (plus par value) on its outstanding bonds that have a carrying value of $208,000 and par value of $200,000. The company exercises the call option after the semiannual interest is paid on June

    asked by adrian
  365. Elapse time

    3h 40min 10 h 15 min Renaming 11:00 as 10 hours 15 minutes -7h 35 min Subtract the beginning time ------------------ 3h 40 min Subtract So I actually subtract all of it and not add the minutes right? So my answer should be 3h 20min right? How can I check

    asked by Moby
  366. math

    write each fraction as a whole number or mixed number. 24/8 18/5 21/6

    asked by matthew`
  367. physic

    Question Part Points Submissions Used A soccer player kicks a rock horizontally off a 41.7 m high cliff into a pool of water. If the player hears the sound of the splash 3.11 s later, what was the initial speed given to the rock? Assume the speed of sound

    asked by juj
  368. Math

    Hi Steve, You helped me with a question earlier today about finding surface area of a triangular prism with the base being an equilateral triangle . I got the answer 386.6 Is this correct.? I tried to follow your equation and am having a bit of trouble.

    asked by Cherie
  369. Math

    Aidan has $7565 in his checking account. He invests $5000 of it in an account that earns 3.5% intersest compounded continuously. What is the total amount of his investment after 3 years?

    asked by Student09
  370. trigonometry

    can i use factoring to simplify this trig identity? the problem is sinx + cotx * cosx i know the answer is cscx and i know how to get it but i want to know if i can do factoring to get it bc i tried to but it wont give me the answer . this is the step i

    asked by v
  371. General Chemistry I

    A sample of gas occupies a volume of 59.9 mL. As it expands, it does 126.2 J of work on its surroundings at a constant pressure of 798 torr. What is the final volume of the gas? a. 61.1 mL b. 1,250 mL c. 218 mL d. 1,490 mL e. None of the above I used the

    asked by Emily
  372. Math

    _The_Natural_Base_e_ An accident in 1986 at the Chernobyl nuculear plant in the Ukraine released a large amount of plutonium (Pu-239)into the atmosphere. The half-life of Pu-239 is about 24,110 years. Find the decay constant. Use the function N (t) = N 0 e

    asked by Student09
  373. statistics

    Based on data from the National Health and Nutrition Examination Survey assume that the weights of men are normally distributed with a mean of 170 lbs. and a standard deviation of 30lbs. a. Find the probability that a man randomly selected from the above

    asked by Anonymous