Questions Asked on
October 4, 2012

  1. Math

    Solve the following for the indicated variable. V = 1/3Bh for B (volume of a pyramid)

    asked by Aaron
  2. Physics(class) /Math (problem)

    Joe has a ring weighing 16 grams made of an alloy of 20% silver and the rest gold. He decides to melt down the rings and add enough silver to reduce the gold content to 69% . How many grams of silver should he add?

    asked by Toulouse
  3. journal

    Seeing pulsation of the artery at the completion of this dissection.

    asked by talia
  4. Math

    Whcih is correct: 1/2% of 50 is 25. OR.. 1/2 of 50 is 25? The difference of this two is that choice number one has a percent sign and the second choice doesn't have a percent sign.

    asked by Losa
  5. Math

    Which is correct: 1/2% of 50 is 25. OR.. 1/2 of 50 is 25? The difference of this two is that choice number one has a percent sign and the second choice doesn't have a percent sign.

    asked by Losa
  6. Math

    If 1% of a number is 10, how much is 1/2% of the number?

    asked by Losa
  7. advanced algebra

    ms. driva reck drove from her home to a service station at 48 km/h. she returned home by bike at 16 km/h. the entire trip took 4 hours. How far was the service station from ms. reck's home?

    asked by Sabrina
  8. Physics

    In tests on earth a lunar surface exploration vehicle (mass = 5.90 103 kg) achieves a forward acceleration of 0.215 m/s2. To achieve this same acceleration on the moon, the vehicle's engines must produce a drive force of 1.64 103 N. What is the magnitude

    asked by Anonymous
  9. Physics/Math

    Two cars, 127 miles apart, start moving towards each other at the same time. One is moving 3 times as fast as the other. If they meet 1.5 hrs later, find the average speed of the slower car in miles per hour?

    asked by Avery
  10. Physics

    (a) Calculate the magnitude of the gravitational force exerted on a 488-kg satellite that is a distance of 1.95 times earth radii from the center of the earth. (b) What is the magnitude of the gravitational force exerted on the earth by the satellite? (c)

    asked by Donald
  11. math

    to estimate how many more people live in Atherton than Needles, which is closer to the exact answer: rounding to nearest hundreds or thousand

    asked by kelly
  12. Organic chemistry recrystallization

    Say you have a substance X will .5 g of X dissolve in 5.0 ml of water if boiled at 80 degrees? And at what temperature will crystals begin to form?

    asked by Tara
  13. physics

    A space traveler weighs 635 N on earth. What will the traveler weigh on another planet whose radius is three times that of earth and whose mass is twice that of earth?

    asked by Donald
  14. Chemistry

    identify the functional group and indicate polar bonds by assigning partial positive and negative charges. 1) The structure CH3OCH3 is drawn out and I know that this is an ether because the O is bonded to two carbons but I am not sure how to assign the

    asked by hannah
  15. Chemistry

    I am trying to figure out what functional group the compound CH2ClCH3 is in. I know that it is not a ketone, alcohol, ester, ether, amine, amide, ect..

    asked by hannah
  16. physics

    Three uniform spheres are located at the corners of an equilateral triangle. Each side of the triangle has a length of 3.10 m. Two of the spheres have a mass of 3.20 kg each. The third sphere (mass unknown) is released from rest. Considering only the

    asked by Donald
  17. Physics

    A jet makes a landing traveling due east with a speed of 110 m/s. If the jet comes to rest in 11.0 s, what is the magnitude and direction of its average acceleration? you don't have to give me the answer but a step by step on how to solve this would help

    asked by beginner
  18. Stats

    On her first test in algebra, Mary earned a score of 75, and she made an 85 on her first psychology test. If the average score on the algebra test was a 68, with s=7, and the average on the psychology test was 91, with s=6, is Mary doing better in

    asked by Amber
  19. physics

    Several people are riding in a hot-air balloon. The combined mass of the people and balloon is 328 kg. The balloon is motionless in the air, because the downward-acting weight of the people and balloon is balanced by an upward-acting 'buoyant' force. If

    asked by Donald
  20. Chemistry

    A vessel containing air (79% N2 and 21% O2) at 5bar and 280K is placed in a vacuum and a tiny hole is punched through the lid of the vessel. If the rate of effusion of O2 is 1.25x10^-7mol/s, at what rate is the nitrogen effusing? (in mol/s)

    asked by Nancy
  21. Maths - Geometric Progression

    Find the value of x for which the numbers x+1, x+3, x+7, are in geometric progression.

    asked by Anonymous
  22. Physics

    HELP HELP When a chameleon captures an insect, its tongue can extend 16 cm in 0.10 s. (a) Find the magnitude of the tongue’s acceleration, assuming it to be constant. (b) Let Δx be the amount that the chameleon's tongue moves during the second 0.050 s.

    asked by beginner
  23. Calc

    Find the derivative of y=x(6^(-1x))

    asked by Lanea
  24. Geometry

    Complete Problem #28 in Section 1.5 Exercises (Chapter 1) of Essentials of Geometry for College Students. Use the table below to show your work and solve the problem. You may add or delete rows as necessary. Statements Reasons PQ=RS Given PS=PQ+RS Segment

    asked by Angie
  25. Science

    What is the molarity of a solution prepared by dissolving 60 gm of Glucose in 500 gm of water

    asked by Imrul
  26. Physics

    A volleyball player serves the ball horizontally with a speed of 23.8 m/s. How far will it have dropped when it reaches a distance 9.1 m

    asked by Lacey
  27. trig

    tan^2theta+6=sec^2theta+5

    asked by Colt
  28. Calc

    Whats the derivative of 2x^2*tan(X)/sec(x) ?

    asked by Jordan
  29. BIOLOGY

    BIOLOGY MEANS?

    asked by GEME
  30. BIOLOGY

    BIOLOGY MEANS?

    asked by GEME
  31. Chemistry

    Suppose that 30.0 mL of 0.20 M C6H5COOH(aq) is titrated with 0.30 M KOH(aq) (a) What is the initial pH of the 0.20 M C6H5COOH(aq)? (b) What is the pH after the addition of 15.0 mL of 0.30 M KOH(aq)? (c) What volume of 0.30 M KOH(aq) is required to reach

    asked by Zell
  32. science

    Your airplane just ran out of gas. Your plane is falling at a velocity of 80m/sec down. At that velocity, how long will it take your airplane to reach the ground?

    asked by Bokyung
  33. Physics

    A body of mass m breaks up into 2 parts of rest mass m1 and m2 with velocity v1 and v2 ,what will be the energies of m1 and m2 in terms of m,m1,m2 and c,the velocity of light.

    asked by Krishna
  34. Computer Science

    Where can I find college grants and scholarships for men 2 deviations below standard in height?

    asked by James
  35. geometry

    a painting is made od 3 concentric squares. the side lenght of the largest square is 24 cm what is the area of the painting

    asked by Anonymous
  36. math

    select the related number from the alternatives. 6:21::3:? A) 28 B) 18 C) 61 D) 32

    asked by nitin nagar
  37. c# programming

    To see how the four steps of the software development procedure discussed in Section 1.7 can be applied in practice, you apply them to the following simple programming problem: The circumference, C, of a circle is given by the formula C = 2ðr, where ð is

    asked by fatih
  38. programming

    Application: Pendulum Clocks Pendulums used in clocks, such as grandfather clocks, keep fairly accurate time for the following reason: When the length of a pendulum is large compared with the maximum arc of its swing, the time to complete one swing is

    asked by fatih
  39. Maths

    Evelyn has a ribbon 420 cm long. She uses 216 cm to decorate a present., What percentage of ribbon is left> Express your answer correct to 1 decimal place.

    asked by Zayn
  40. Chemistry

    Tell me what are reducd and what oxidising in exampel Cu2+2HaSO4>CuSO4+SO2+2H2O

    asked by Imran
  41. Maths

    A jug contained 780 ml of mil. Mrs Li poured 221 ml of the milk into a glass and 130 ml into a cup. What percentage of milk was left in the jug?

    asked by Zayn
  42. Maths

    The selling price of a pencil box was $4. Chee Keong bought the pencil box and paid $4.28 including GST. What percentage of milk was left?

    asked by Zayn
  43. world civilization

    what was the relationship between politics and science in the early modern world?

    asked by jess
  44. Maths

    Mr Srinivasan invests $55 000 in a fixed deposit account. The interest rate is 3.3 % per year. How much money will he have in the account after 1 year?

    asked by Zayn
  45. Maths

    Rahyu spent 2h 25 min in a library. She spent 30 min of the time reading newspapers. What percentage of her time in the library was spent reading newspapers? Round off your answer to the nearest whole number.

    asked by Zayn
  46. chemistry

    Calculate the freezing point of a solution contaning 5.0 grams of KCl and 550.0 grams of water. answer is -0.45 C but i don't know how to get here

    asked by Paloa
  47. math

    what is the sample standard deviation of 12 12 14 16 17 18 21 21

    asked by tina
  48. Intergated chemistry/physics

    What is the momentum of a 100 kilogram football player moving with a speed of 3.5 meters/second. The units should be written as kg m/s.

    asked by Laura
  49. Intergated chemistry/physics

    Which has more momentum: a 45 gram golf ball travelling at 180 miles per hour or a 430 gram soccer ball travelling at 20 miles per hour?

    asked by Laura
  50. Intergated chemistry/physics

    If a bowling ball is rolling at a speed of 1.5 meters/second and has a momentum of 10.0 kg m/s, what is the mass of the ball in kilograms?

    asked by Laura
  51. Maths

    CORRECTION. The selling price of a pencil box was $4. Chee Keong bought the pencil box and paid $4.28 including GST. What percentage of the selling price was the GST?

    asked by Zayn
  52. Intergated chemistry/physics

    What is the speed (in m/s) of an object that has a mass of 2.5 kilogram and a momentum of 1,000 kg m/s?

    asked by Laura
  53. Intergated chemistry/physics

    A 200 man is running 3 miles per hour and collides with a 125 pound man. If the larger man transfers all of his momentum to the smaller man, will the smaller man travel slower, faster or at the same speed as the larger man?

    asked by Laura
  54. Intergated chemistry/physics

    A 10 pound bowling ball with a speed of 2.0 meters/second hits a 6 pound bowling ball. If the 10 pound bowling ball stops after the collision, what is the resulting speed of the 2nd ball in meters/second

    asked by Laura
  55. Intergated chemistry/physics

    A 200 pound go-kart with a speed of 20 miles/hour collides with a 2nd go-kart (that was at rest) and causes it to move at a speed of 15 miles per hour. What is the mass of the 2nd cart if the first kart came to a stop upon collision?

    asked by Laura
  56. Intergated chemistry/physics

    Your teacher bumps into you in the hallway and knocks you down. After he apologizes, he asks you to figure out how fast he was going. By some magical coincidence, you just happened to be wearing a gauge that measured your mass to be 75 kilograms and your

    asked by Laura
  57. Intergated chemistry/physics

    You are riding a 30 pound bicycle and you weigh 150 pounds. You are travelling at 20 miles per hour and fail to notice the 30 pound dog is in your path. If you transfer half of your momentum to this dog, what speed could he potentially reach?

    asked by Laura
  58. social studies

    Which one of the following babies is at greatest risk for SIDS? A. Alfred, who is 5 months old and had a difficult birth B. Mary, who is 2 weeks old and has irregular sleep patterns and an overweight mother C. John, who is 3 months old and has a teenage

    asked by clara
  59. social studies

    Barbara's due date was over 2 weeks ago. Dr. Sally told Barbara that her baby is postmature, so she wants to induce labor. What is probably Dr. Sally's greatest concern regarding the health of Barbara's baby? A. The baby might be brain damaged. B. Barbara

    asked by clara
  60. chemistry

    What is the mass of 1120cm cube of hydrogen gas at 750mmHg and 40 degree celsius

    asked by Femi
  61. Math

    How do you make this true Using 48, 6, 2, and 5 =18 by using (+, -, x, or /)

    asked by Jack
  62. World Civilization IV

    How were the colonists able to control the King's governers in America?

    asked by Anonymous
  63. Calculus 2

    Find the integral of acrsinhxdx

    asked by Heather
  64. Calculus 2

    Find the derivative of ln(arccoshx)

    asked by Heather
  65. Trigonometry

    √3 + 5cos⦸ = 3 cos⦸ Can someone please explain for me how to express the answer in radian measure? Thanks

    asked by John
  66. combustion

    The heat of formation of gaseous octane (C8H18(g)) is -49.79 kcal/mole. (a) Calculate the energy required to form one mole of gaseous octane, (b) Estimate the heat of formation of gaseous octane, and (c) compare your estimation with the actual enthalpy of

    asked by pius
  67. finance mortgage payment

    your mortgage payment is $1,500 per month. Of this amount, insurance is %50, property taxes are $200, and interest averages about $1,100. Assuming you have other itemized deductions that already exceed your standard deduction and that you are in the 31%

    asked by Alli
  68. combustion

    You have a gaseous octane (C8H18(g)). Calculate the lower heating value (LHV) and higher heating value (HHV) of the given fuel in MJ/kg(fuel).

    asked by paul
  69. Trigonometry

    How do you solve for f(x) = -5sin(θ/3) ?

    asked by John
  70. statistics

    If the correlation coefficient is -0.54, what is the sign of the slope of the regression line? - As the correlation coefficient decreases from 0.86 to 0.81, do the points of the scatter plot move toward the regression line, or away from it

    asked by mom
  71. statistics

    . For the table that follows, answer the following questions: x y 1 -1 2 -5 3 -9 4 - Would the correlation between x and y in the table above be positive or negative? - Find the missing value of y in the table. The missing value of y = How would the values

    asked by mom
  72. math

    Integrate sinx/sinx-cosx..... Plz note sinx-cosx as a whole is in the denominator..

    asked by abhi
  73. statistics

    Determine whether each of the distributions given below represents a probability distribution. Justify your answer. (A) x 1 2 3 4 P(x) 1/5 5/12 1/3 1/6 (B) x 3 6 8 P(x) 0.2 2/5 0.3 (C) x 20 35 40 50 P(x) 0.3 -0.1 0.5 0.3

    asked by mom
  74. statistics

    Two cards are selected, one at a time from a standard deck of 52 cards. Let x represent the number of Jacks drawn in a set of 2 cards. (A) If this experiment is completed without replacement, explain why x is not a binomial random variable. (B) If this

    asked by mom
  75. statistics

    You are given the following data. Number of Absences Final Grade 0 95 1 91 2 82 3 69 4 67 5 58 - Find the correlation coefficient for the data. - Find the equation for the regression line for the data, and predict the final grade of a student who misses

    asked by mom
  76. Trigonometry

    What is the period of the function f(x) = -5sin(θ/3) ?

    asked by John
  77. Trigonometry

    How do you solve the equation 5√3 secθ = 10 in degree measure? please explain.

    asked by John
  78. math

    in an examination there are 180 questions , 4 marks is given for each correct answers and 1 marks is subtracted for each wrong answers . if a boy scores 220 marks find the no of correct and wrong answers ???

    asked by TUHITUHI
  79. Physics 1

    This is a repost....:Two small particles of mass 16 kg and 27 kg are a distance 1.4 m apart. What is the gravitational force of one of these particles on the other?_____N

    asked by John
  80. Physics 1

    The hard disk in a laptop computer contains a small disk that rotates at a rate of 5000 rpm. If this disk has a radius of 2.3 cm, what is the centripetal acceleration of a point at the edge of the disk?_____m/s^2

    asked by John
  81. Physics 1

    Find the ratio of your weight on the Earth to your weight on the surface of the Earth's Moon. WEarth/WEarth's Moon=

    asked by John
  82. physics

    Two packing crates of masses 10.89 kg and 2.59 kg are connected by a light string that passes over a frictionless pulley as in the figure below. The 2.59 kg crate lies on a smooth incline of angle 40.0°. a) Find the acceleration of the 2.59 kg crate B)

    asked by lib
  83. Physics 1

    The region of the solar system between Mars and Jupiter contains many asteroids that orbit the Sun. Consider an asteroid in a circular orbit of radius 5.8 1011 m. Find the period of the orbit. _____s

    asked by John
  84. physical science

    How do we add forces that act at an angle?

    asked by riky
  85. calculus

    Integrate e^2x/e^x 1....plzz note e^x 1 as a whole is the denominator

    asked by abhi
  86. physics

    the angle between i +j and i is a. pi/6 b. pi/2 c. pi/3 d. pi/2

    asked by qwertyuiop
  87. science

    i have a work sheet to do it gives me the atomic number and the mass number of elements i have to fill in the missing electrons protons neutrons

    asked by austin
  88. World Geo

    when britian joined the EU, new Zealand: gained new markets lost an important trade partner shifted focus to Asian markets I am honestly not quite sure. Please help.

    asked by randomchik
  89. math

    if x-2 is a factor of polynomial x cube - 2ax square + ax - 1 what is the value of a ??

    asked by TUHITUHI
  90. combustion

    A glass melting furnace is burning ethane (C2H4) in pure oxygen (not air). The furnace operates at an equivalence ratio of 0.9 and consumes 30 kmol/hr of ethane. (A) Determine the energy input rate based on the LHV of the fuel. Express your result in both

    asked by paul
  91. science

    how has the process of natural selection helped to produce organisms which posses specific adaptions to help them survive in their environment?

    asked by cristina
  92. physics

    A jet makes a landing traveling due east with a speed of 100 m/s. If the jet comes to rest in 15.0 s, what is the magnitude and direction of its average acceleration? due west or due east? How can I solve this question? You don't have to give me the answer

    asked by freshmen
  93. science

    A quantity of steam (200 g) at 126°C is condensed, and the resulting water is frozen into ice at 0°C. How much heat was removed?

    asked by KeKe
  94. physics

    You drive a car 2.0 km to the gas station, 4.0 km to the shopping mall to let your mother off, and 4.5 km back home. The trip takes 20.0 min. What is your average speed?

    asked by Skylar
  95. World Geography

    How do push and full factors and physical geography affect immigration?

    asked by Melissa
  96. World Geography

    What processes cause changes in settlement patterns?

    asked by Melissa
  97. World Geography

    What economic factors determine population trends and demographics of a region?

    asked by Melissa
  98. World Geography

    What human and physical features influence the size and distribution of settlements?

    asked by Melissa
  99. Earth Science

    Renewable resources can be replaced as fast as they are consumed? It is true or false?

    asked by jacob
  100. Science

    A fire breaks out and increases the Kelvin temperature of a cylinder of compressed gas by a factor of 1.4. What is the final pressure of the gas relative to its initial pressure?

    asked by KeKe
  101. Algebra II

    Can you make sure my Algebra II work is correct? I've done the problems. I just want to make sure I am right. 1. Write an equation of the line with a slope of 5 and a y-intercept of -3. y=5x-3 2. Write the equation of a line that passes through (9, 3) and

    asked by Andrea
  102. Algebra....HELP!!

    Explain how to factor the following trinomials forms: x2 + bx + c and ax2 + bx + c. Is there more than one way to factor this? Show your answer using both words and mathematical notation.

    asked by Austin
  103. Chemistry(Please check)

    identify the functional group and indicate polar bonds by assigning partial positive and negative charges. 1) The structure CH3OCH3 is drawn out and I know that this is an ether because the O is bonded to two carbons but I am not sure how to assign the

    asked by hannah
  104. Chemistry(Please help)

    I am trying to figure out what functional group the compound CH2ClCH3 is in. I know that it is not a ketone, alcohol, ester, ether, amine, amide, ect..I do not know what it could be.

    asked by hannah
  105. Latin

    Urgent Help - I need to translate this sentence into Latin There is nothing new under the sky

    asked by Beth
  106. Calculus 2

    Find the integral of sinh^2(x)dx.

    asked by Heather
  107. Calculus 2

    Find the derivative of ln(x+(x^2-1)^(1/2)).

    asked by Heather
  108. Calculus

    Find the equation of the tangent plane at the given point. 1)x^2+y^2-z=1 at the point (1,3,9) 2)x^2*y^2+z-40=0 at x=2, y=3 3) x^2+ln(xy)+z=6 at point (4,0.25,2) For the first one I got the partial fraction in terms of x, y and z and my final answer was

    asked by Alicia
  109. Stor

    It would be quite risky for you to insure the life of a 25-year-old friend . There is a high probability that your friend would live and you would gain $875 in premiums. But if he were to die, you would lose almost $100,000. Explain carefully why selling

    asked by ami
  110. PHYSICS

    if the zero level is a distance 2h/3 above the floor what is the potential energy U of the block on the floor?

    asked by D.B.
  111. Stor

    Here is a simple way to create a random variable X that has mean μ and stan- dard deviation σ: X takes only the two values μ−σ and μ+σ, eachwith probability 0.5. Use the definition of the mean and variance for discrete random variables to show that

    asked by ami
  112. Latin

    I need help in translating these sentences (lazy) The master's son used to give money to men in front of the temple. We will praise the Romans, for their fame is great. Will you help the sick women? Report the news to the sailors now. For a long time, the

    asked by Beth
  113. College Physics

    A body of mass m breaks up into 2 parts of rest mass m1 and m2 with velocity v1 and v2 ,what will be the energies of m1 and m2 in terms of m,m1,m2 and c,the velocity of light.

    asked by Krishna
  114. Algebra

    I have to use this equation to get the answer (t)=time. V=S+a*t I divided t by both sides, but get a little confuse do I divide V by both sides as while is the answer: t = V/s+a/S??

    asked by Angie
  115. Calculus 2

    integral of sinh(p*ln(x/xsub0))dx

    asked by Heather
  116. S.S

    What Events Led The Washington Crossing The Delaware

    asked by Katia
  117. general science

    a 210 Newton force is applied to a piston, the force produced is 320 kPa of pressure, what's the area of the piston?

    asked by avery
  118. Algebra

    Explain how to factor the following trinomials forms: x2 + bx + c and ax2 + bx + c. Is there more than one way to factor this? Show your answer using both words and mathematical notation.

    asked by Tammie
  119. Accounting

    Comment on Dr. Hendley's statement that the difference between the opening bank balance ($30,000) and the January balance ($75,000) is pure profit.

    asked by Pam
  120. chemistry

    what is the result of using 75g of dihydronoxybutanedioric acid in one liter of H2O in a titration? I do not have a answer.

    asked by Stephen
  121. chemistry

    a sample of sodium-24 with an activity of 12 mCi is used to study the rate of blood flow in the circulatory system. If sodium-24 has a half-life of 15 h, what is the activity of the sodium after 2.5 days. please show work.

    asked by rachel
  122. physics

    a nurse walks along the shown route to get to the department of oncology determine the magnitude and direction of her displacement and fine the total distance traveled by the nurse? ^ Oncology Department / 30m / /)45 degrees ^------------>/-------- | 50m |

    asked by qwertyuiop
  123. math

    what number makes this true 4 = 0.4 x

    asked by Charr
  124. Physics

    A 59-kg housepainter stands on a 16-kg aluminum platform. The platform is attached to a rope that passes through an overhead pulley, which allows the painter to raise herself and the platform. (Ignore the mass of the pulley and any friction in the pulley.)

    asked by Madi
  125. chemistry

    A sample of oil has a mass of 65g and a volume of 80.0 mL. What is the density?

    asked by sherry
  126. Chemistry

    The combustion of benzoic acid releases 26.38kJ/g and is often used to calibrate a bomb calorimeter. the combustion of 1.045 g of benzoic acid caused the temperature of the calorimeter to rise by 5.985C. Useing the same calorimeter, a sample of 0.876g of

    asked by Alisha
  127. AP Chemistry

    If 15.0mL of 2.50M NaCl is mixed with 60.0mL of 0.300M Pb(NO3)2, what is the mass of the precipitate

    asked by Martin
  128. physics

    The capacitance of a spherical capacitor with inner radius b and outer radius a. Suppose a is fixed. What is radius b in terms of a such that the capacitor can store a maximum amount of energy , assuming that the electric field strength at the surface of

    asked by lam
  129. phsics

    Two materials, for example silver and copper, of same cross section can be welded into a composite wire. When a voltage is applied across this wire, a stable current i whose value is determined by Ohm¡¦s Law is formed. Since the wire has uniform cross

    asked by lam
  130. Algebra Grade 7

    What would be the scale factor if an airplane is 87 feet long; 2 inches = 15 feet

    asked by randomchik
  131. world Geography

    What social factors determine population trends and demographics of a region?

    asked by Melissa
  132. world geography

    What processes cause changes in settlement patterns?

    asked by Melissa
  133. grammar

    Sensory was intact to light touch, proprioception, and pinprick.

    asked by sharon
  134. physics

    A daredevil decides to jump a canyon. It's walls are equally high and 13 m apart. He takes off by driving a motorcycle up a short ramp sloped at an angle of 18°. What minimum speed must he have in order to clear the canyon?

    asked by Anonymous
  135. DU

    What is ratio??

    asked by Morshed
  136. Math

    Write the ratio in three different formats:a to b ,a : b , and a/b . Carlos biked 24 miles and ran 6 miles. Write the ratio of the distance Carlos biked to the total distance.

    asked by Sarah
  137. Physics

    The steel ball is suspended from the accelerating frame by the two cords A and B. The angles (they are on the inside) are both 60 degrees. Determine the acceleration of the frame which will cause the tension in A to be twice that in B. The acceleration is

    asked by Ian
  138. Physics

    A projectile is launched at an angle of 64.3 degrees with the horizontal (x axis) at some unknown velocity. After 4 seconds, the object's angle of trajectory is 47.2 degrees above the horizontal. What is the object's vertical displacement at this time in

    asked by Haley
  139. math

    how many minivans (15 minivans) would pass susan if 60 vehicles passed her

    asked by brianna
  140. economics

    There are two goods 1 and 2. Denote by (x1; x2) the consumption bundle consisting of x1 units of good 1 and x2 units of good 2. A consumer has preferences that described by the linear utility function: u(x1; x2) = x1 + 2x2: 1. Write down the equation for

    asked by april
  141. physics

    A person pulls a toboggan for a distance of 34.6 m along the snow with a rope directed 29.3 ° above the snow. The tension in the rope is 110 N. (a) How much work is done on the toboggan by the tension force? (b) How much work is done if the same tension

    asked by Rob
  142. chemistry

    what is mass

    asked by mae
  143. math

    at this rate how many minivans would pass luann if 60 vehicles passed her? HINT; minivans= 15

    asked by abby
  144. chemistry

    Why is gas a chemical reaction not detectable by sight? Explain? my answer is because the atoms or molecules of matter in the gaseous state move freely among each other, and are, in most instances, packed more loosely than the molecules of the same

    asked by Lea
  145. physic

    A man is running at speed c (much less than the speed of light) to catch a bus already at a stop. At t=0, when he is a distance b from the door to the bus, the bus starts moving with the positive acceleration a. Use a coordinate system with x=0 at the door

    asked by metu
  146. precalculus

    A batter hits a baseball from 3eet above home plate along the path x=69t, y=3+40t-16t(squared.)

    asked by steve
  147. Math

    Solving Inconsistent Systems and Dependent Systems 1. 3x - 2y= 1 -6x + 4y= -2 2. 6y=14 - 4x 2x= -3x - 7

    asked by Neil
  148. precalculus

    A batter hits a baseball from 3eet above home plate along the path x=69t, y=3+40t-16t(squared.)

    asked by steve
  149. Physics

    When you see a traffic light turn red, you apply the brakes until you come to a stop. Suppose your initial speed was 12.9 m/s, and you come to rest in 35.0 m. How much time does this take? Assume constant deceleration. What equation do I use to solve this

    asked by Chad
  150. precalculus

    ROtate the conic so that its equation 3xy-4y²+ 18=0 has no xy term

    asked by steve
  151. British Lit

    What unified the religion of Britain?

    asked by Monica
  152. chemistry

    what is the complete ionic equation for the double displacement of CuNO3(aq)+K2S(aq)

    asked by Lea
  153. math

    Abby takes 6 steps forward, then 2 steps back. If she repeats this pattern,how many steps will she be from where she startedafter 4 moves? After 5 Moves?

    asked by yvonne
  154. math

    the figure represents a building in the shape of a regular hexagon. using the scale 1cm=177m, what is the perimeter of the building 1.1cm?

    asked by Taylor
  155. physics

    a pitching machine throws a baseball at a batter with an initial velocity of 22.0 m/s at an angle of 30 degrees to the horizontal. the ball is 1.60 m above the ground when it is pitched. a) if the batter hots the ball at the same height as it was launched

    asked by jhon
  156. physics

    A 16-kg sled is being pulled along the horizontal snow-covered ground by a horizontal force of 35 N. Starting from rest, the sled attains a speed of 2.1 m/s in 9.5 m. Find the coefficient of kinetic friction between the runners of the sled and the snow.

    asked by Rob
  157. history

    Who initiated the phrase "MANIFEST DESTINY"?

    asked by cindy
  158. physics

    Jackie exerts a 43 N horizontal force as she pulls a sled that weighs 140 N across a cement sidewalk at a constant speed. What is the coefficient of kinetic friction between the sidewalk and the sled?

    asked by alexus
  159. math

    the figure represents a building in the shap of a regular hexagon. using th e scale 1cm=177m, what is the perimeter of the building 1.1cm?

    asked by Taylor
  160. Math

    How many tiles are needed to create a border 3 inches high along the base of a wall?

    asked by stephany
  161. British Lit

    What unified Britain to accept Christianity?

    asked by Monica
  162. english

    What is the answer to the following: Many ____ stomachs were often empty. A refugees B refugee's C refugees' D refugees's

    asked by B
  163. Engineering Fund.

    A large box whose mass is 19.0 kg rests on a frictionless floor. A mover pushes on the box with a force of 235 N at an angle 34.8° below the horizontal. Draw the box's free-body diagram and use it to determine the acceleration of the box. m/s2

    asked by josephz
  164. British Lit

    What are the 3 languages that derive from the original Celtic language?

    asked by Monica
  165. Physics

    A soccer player kicks the ball toward a goal that is 29.2 m in front of him. The ball leaves his foot at a speed of 19.1 m/s and an angle of 33.4° above the ground. Find the speed of the ball when the goalie catches it in front of the net. (Note: The

    asked by Ted
  166. math

    the figure represents a building in the shape of a regular hexagon. using the scale 1cm=177m, what is the perimeter of the building 1.1cm?

    asked by Taylor
  167. English

    I writing narrative story on theme that With independence comes amplified accountability. teacher say it be good if it be third person narrative. though i not know what to write about, teacher show us example and one which a girl write be through a birds

    asked by Mohammad
  168. chemistry

    How do you write a net ionic and complete ionic equation for the reaction HClO4 + Mg(OH)2 --> MgClO4 + H2O?

    asked by Charlotte
  169. Physics

    Need Help with physics! Two cars drive on a straight highway. At time t = 0, car 1 passes mile marker 0 traveling due east with a speed of 17.0 m/s. At the same time, car 2 is 1.3 km east of mile marker 0 traveling at 30.0 m/s due west. Car 1 is speeding

    asked by Brandon
  170. social studies

    A map should have what 4 characteristics?

    asked by Erin :)
  171. Simplifying Fractions

    20/60=1/3? 15/60=1/4? 27/81=1/3? 28/36=7/9 23/46=1/2? 12/27=4/9? 75/100=3/4? 10/25=2/5? 20/28=5/7?

    asked by Jerald
  172. English

    What is the answer to the following: Money might be sewn into ___ coat A. women's B. woman's C. womens' D. womans'

    asked by B
  173. math

    kyle has 3 scrapbooks. robin has 3 times as many scrapbooks as kyle has. how many scrapbooks do kyle and robin have combined. A. 12 scapbooks B. 9 scrapbooks c. 13 scrapbooks D. 30 scrapbooks

    asked by mythreyee
  174. social studies

    How much of the earth's surface is water?

    asked by Erin :)
  175. math

    Johns vacation scrapbooks has 2 times as many pages as his school scrapbook. There are 6 pages in john's school scrapbook. how many pages are in both of john's scrapbook combined

    asked by mythreyee
  176. english

    Answer the following ____ stories seemed unbelievable. A. Survivors B. Survivor's C. Survivors' D. Survivors's

    asked by B
  177. Math! Ms. Sue Please Help!!!

    How do you use a venn diagram to find the GCF and LCM of two or more factors. This is what a venn diagram looks like: ()()

    asked by Angelina
  178. Physics

    a steel ball rolls off a table top 60 cm high. if the ball strikes the floor at a distance 50 cm from the base of the table, what was its velocity at the instant it left the table?

    asked by Anonymous
  179. Math241

    How do I solve x^2+4y^3=-828 at pont (-6,-6) The slope=

    asked by Richard
  180. Science

    How was the process of natural selection helped to produce organisms which possess specific adaptations to help them survive in their environment?

    asked by Anonymous
  181. English

    We found it hard to understand why Randy had spoken as rude as he did in response to a simple question. is rude correct or is it rudely and why

    asked by Mark
  182. Spanish Check

    Vamos a... Form sentences using the following information. Use ir a + infinitive in each sentence to express what the subject is going to do. Follow the model closely. 1.Leonardo / trabajar / las tres de la tarde -Leonardo está estudia las tres de la

    asked by Riley
  183. English

    There is a control on the television set for making the picture a little less brighter. Is the sentence correct or is it a little less bright

    asked by Mark
  184. PHYSICS

    IF YOU DROP A BALL FROM A HEIGHT OF 2.6M, HOW LONG WILL IT TAKE TO REACH THE GROUND? HOW FAST WILL IT BE GOING WHEN IT HITS THE GROUND? PLEASE HELP.

    asked by Anonymous
  185. English

    my friend also need idea to write about independent story, he not want to do one on human, what he write about animals?

    asked by Mohammad
  186. science

    On Earth, the ratio of the force (newtons) to the mass (kilograms) of an object is always the same

    asked by Matt
  187. physics

    Heather and Matthew walk eastward with a speed of .85 m/s east. If it takes them 50 min to walk to the store, how far have they walked? Answer in units of km

    asked by Diondre
  188. physics

    Which of the following correctly describe the gravitational attraction between Earth and the Moon? -The Earth and the Moon exert equal size gravitational forces on each other. -The gravitational force of the Moon on the Earth is towards the Moon. -Both the

    asked by Emily
  189. Health Care Management

    During the health care debate in Congress Republicans were accused of wanting to "Kill Granny". Is David Blumenthal implying something along the same lines as Congressional Republicans are purported to support? How can this issue be addressed?

    asked by angie
  190. Free Fall

    The acceleration due to gravity on planet X is one fifth that on the surface of the earth. If it takes 3.9 s for an object to fall a certain distance from rest on earth, how long would it take to fall the same distance on planet X?

    asked by Joe
  191. math

    A train leaves the station at 9:00 pm traveling east at 36 miles per hour. A second train leaves the station at 10:00 pm traveling west at 42 miles per hour. At what time will both trains have traveled the same distance? I need help solving it :)

    asked by ash
  192. Accounting Question?

    What is the distinguishing characteristic between accounts receivable and notes receivable? a. Notes receivable generally specify an interest rate and a maturity date at which any interest and principle must be repaid. b. Accounts receivable are usually

    asked by Anton
  193. physics

    The punter on a football team tries to kick a football so that it stays in the air for a long "hang time." If the ball is kicked with an initial velocity of 25.2 m/s at an angle of 58.5° above the ground, what is the "hang time"?

    asked by Molly
  194. math

    a social security number contains nine digits such as 074-66-7795. how many different social security numbers can be formed?

    asked by Pat
  195. algebra

    A train leaves the station at 9:00 pm traveling east at 36 miles per hour. A second train leaves the station at 10:00 pm traveling west at 42 miles per hour. At what time will both trains have traveled the same distance? I need help solving it :)

    asked by ash
  196. check my precalc

    State if it is a polynomial. If yes, say the degree. 2.f(x)=5x^2 +4x^4 4.f(x)=3-(1/2x) 6.f(x)=x(x-1) 8.f(x)=sqaure oot of x (square root of x-1) 10.f(x)=(x^2-5)/x^3 12. f(x)=-3x^2(x+2)^3 my answers 2.yes, 6 4.yes, 1 6.yes, 3 8.no 10.no 12.yes, 5 thanks!!

    asked by Rebekah
  197. math

    hannah and francine has $120. Hannah and peter has $230. Peter has 6 times as much money as francine . how much money does hannah have?

    asked by jamiaya
  198. Math

    How do i draw and label the demensions of all the rectangles you can make using the number of tiles equal to the number 14 on a grid paper?

    asked by Bailey
  199. math

    why is one and two hundredths meters is the same as one metre and two centimetres

    asked by amy
  200. Precalculus

    A direction of S 23 degree W is the same as which of the following in air navigation? Please let me know how you did it. Thank you!

    asked by Ashley
  201. math

    what is the greatest zero of the function y=x^2-25+66

    asked by sarah
  202. Algebra Grade 7

    Pentagon ABCDE ~ Pentagon FGHIJ. Find BC for GH =12, IJ = 15 and DE = 10

    asked by randomchik
  203. Calc 3 PLEASE HELP!!!!

    Find the maximum and minimum volumes of a rectangular box whose surface area is 1300 cm2 and whose total edge length is 200 cm.

    asked by Becky
  204. Science

    1. Do you think there is very much practical chemistry in today's world? Can you give any examples? 2. When you use different materials, what are they most likely to be made from: Elements, compounds, or mixtures? Which of the three is most rare. please

    asked by Alysha
  205. satp conditions

    Calcium hydride reacts with a vast excess of water to form calcium hydroxide and hydrogen gas. (See the periodic table.) (a) Write a balanced chemical equation for the reaction. (Use the lowest possible coefficients. Include states-of-matter under SATP

    asked by rebekah
  206. math

    why is 2.50 m and 2.05 are not the same in distance

    asked by amy
  207. reading/language arts

    What does insecure mean ?

    asked by GiGi
  208. algebra

    a basket of with 12 apples has a mass of 3105 grams. the same basket with 7 apples has a mass of 1,980 grams. each apple has the same mass. what is the mass of the basket?

    asked by mili
  209. ALG2!

    -3K - 8 is less than or equal to 5k .....solve please

    asked by tyneisha
  210. ALG2!

    1.7 - 0.78>5 solve please

    asked by tyneisha
  211. Physics

    A brick dropped from a roof hits the ground 4.14 seconds later. How high (in m) was the roof?

    asked by Barry
  212. Physics

    A ball was thrown straight up at 26.2 m/s then caught at the same place it was released. How many seconds was it in the air?

    asked by Barry
  213. Physics

    A stone is thrown straight up. To reach a height of 6.49 m above its release point, what must its initial speed be in m/s?

    asked by Ted
  214. Physics

    A stone is thrown straight up at 8.99 m/s. What is the stone's acceleration in m/s/s at the top of its rise?

    asked by Ted
  215. precalc

    is the degree of a polynomial the number of x's or just the highest numbe of x's in a monomial ex: f(x)=-3x^2(x+2)^3

    asked by Rebekah
  216. chemistry

    How many sodium ions are present in 325 mL of 0.850 M Na2SO4?

    asked by Anonymous
  217. math

    why is 2.50 m and 2.05 are not the same in distance

    asked by amy
  218. math

    why is one and two hundredths meters is the same as one metre and two centimetres

    asked by amy
  219. chemistry

    if 27 grams of ice at 0 degrees celsius is added to 123 grams of water at 100 degrees celsius in an insulated container, calculate the final temperature. assume specific heat of water is 4.184 J/K g

    asked by Gabriel
  220. Physics

    An object is moving up an incline which makes an angle of 30 degrees with respect to the horizontal. The coefficient of kinetic friction between the object and the incline is .222. If the object is originally moving at a speed of 5 m/s up the ramp, how far

    asked by Anonymous
  221. Landforms-history

    What is a large, raised that rises above the surrounding ground?

    asked by Emma
  222. physics

    A tire placed on a balancing machine in a service station starts from rest and turns through 4.82 revolutions in 1.48 s before reaching its final angular speed. Calculate its angular acceleration.

    asked by Emily
  223. Physics

    A student has six textbooks, each with a thickness of 4.8 cm and a weight of 26 N. What is the minimum work the student would have to do to place all the books in a single vertical stack, starting with all the books on the surface of the table?

    asked by Anonymous
  224. Physics

    You drive a car 2 h at 48 km/h then 2 h at 62 km/h. What is your average velocity? Answer in units of km/h

    asked by Diondre
  225. physics

    A tire placed on a balancing machine in a service station starts from rest and turns through 4.82 revolutions in 1.48 s before reaching its final angular speed. Calculate its angular acceleration.

    asked by Emily
  226. pHySiCs

    Two identical 5 kg masses are connected together by a string and a friction less pulley of negligible mass. The coefficient of friction between the mass on the 30 degree incline and the below surface is .200. The other incline's surface is friction less.

    asked by Anonymous
  227. Us History

    In need of help, Who Did Alfred T Mahan Look Up To As A Child?

    asked by Jonathan
  228. math

    a basket of with 12 apples has a mass of 3105 grams. the same basket with 7 apples has a mass of 1,980 grams. each apple has the same mass. what is the mass of the basket?

    asked by mili
  229. physical science

    A Weather balloon carries instruments that measure temperature, pressure, and humidity as it rises through the atmosphere. Suppose such a balloon has a volume of 1.2 m3 at sea level where the pressure is 1 atm and the temperature is 20oC. When the balloon

    asked by maria
  230. physics

    A 38.5 kg girl and a 57.0 kg boy are on the surface of a frozen lake, 10.0 m apart. Using a rope, the girl exerts a horizontal 5.55 N force on the boy, pulling him toward her. Calculate the magnitude of the girl's acceleration

    asked by kay
  231. ALG2! WORD PROBLEM!

    define a variable and write an inequality for each problem.then solve. Nineteen more than a number is less than 42.

    asked by tyneisha
  232. Chemistry

    What can be concluded about Volume in milliliters per celsius, and volume in milliliters per kelvin?

    asked by Megan
  233. Physics

    What is its initial vertical speed? The acceleration of gravity is 9.8 m/s 2 and maximum height is 4.7 m ,. Neglect air resistance. Answer in units of m/s

    asked by fabio
  234. physics

    A brick dropped from a roof hits the ground 3.29 seconds later. How high (in m) was the roof?

    asked by Conner
  235. Precalc

    how do I graph this function? x^2-xy+2x-1=0

    asked by Matt
  236. physics

    A ball was thrown straight up at 20.7 m/s then caught at the same place it was released. How many seconds was it in the air?

    asked by Conner
  237. physics

    A stone is thrown straight up. To reach a height of 6.74 m above its release point, what must its initial speed be in m/s

    asked by Conner
  238. physics

    A stone is thrown straight up at 5.94 m/s. What is the stone's acceleration in m/s/s at the top of its rise?

    asked by Conner
  239. maths

    how many piece of 3/4 inch long can be cut from a foot long card

    asked by stacy
  240. Pre-Algebra

    4( x+8)+ 9x =

    asked by Fisher
  241. physics

    Please help!!! A car travels 90.0 minutes on the highway. For the first 36.6 minutes it travels 76.5 km/h. It maintains 95.1 km/h for the remainder of the trip. What was the average speed of the vehicle in km/h?

    asked by Victoria
  242. physics

    A vehicle accelerates from rest at 6.68 m/s/s for 4.1 s. What is the final speed of the vehicle?

    asked by Victoria
  243. Social sytudies

    Please list four folkways.

    asked by Juanita
  244. physics

    A stunt driver starting from rest needs to achieve a speed of 26.2 m/s. If her vehicle accelerates at 8.3 m/s/s, what distance (in m) must she travel to achieve the desired speed?

    asked by Victoria
  245. physics

    A car decelerates at a constant rate from 98.5 km/h to 67.9 km/h over a distance of 0.651 km. How many seconds is the car decelerating?

    asked by Victoria
  246. physics

    How many seconds is required to stop a vehicle travelling 55.9 km/h if it decelerates at 8.2 m/s/s?

    asked by Victoria
  247. Ap Chemistry

    A 100.0 mL aliquot of 0.200 M aqueous potassium hydroxide is mixed with 100.0 mL of 0.200 mL of 0.200 M aqueous magnesium nitrate.

    asked by Stephanie
  248. physics

    A roller-coaster vehicle has a mass of 400 kg when fully loaded with passengers. r1 = 11 m and r2 = 17 m. If the vehicle has a speed of 17 m/s at A, what is the magnitude of the force that the track exerts on the vehicle at this point?

    asked by Emily
  249. PHYSICS!!

    A plane drops a hamper of medical supplies from a height of 4190 m during a practice run over the ocean. The plane’s horizontal veloc- ity was 111 m/s at the instant the hamper was dropped. What is the magnitude of the overall ve- locity of the hamper at

    asked by Ray
  250. Math 102

    What number must be added to the numerator and subtracted from the denominator of 10/23 to obtain a fraction equivalent of 6/5? Please provide step by step, this is a word problem for rational expressions. Thank you

    asked by Allen
  251. physics

    You place a box weighing 286.3 N on an in- clined plane that makes a 45 angle with the horizontal. Compute the component of the gravita- tional force acting down the inclined plane.

    asked by rey
  252. Physics

    a man is 1.8m tall and is standing at the bottom of a 54m tall building, he looks up and sees a brick that has fallen 39m towards him. how much time does he have to get out of the way before the brick hits him?.

    asked by GS
  253. Chemistry

    Portland cement contains some SiO2. Calculate the mass percent composition of silicon in this compound.

    asked by Jenny
  254. Chem

    A sample of an unknown biochemical compound is found to have a percent composition of 55.03 percent carbon, 5.54 percent hydrogen, 32.10 percent nitrogen and the balance oxygen. What is the simplest formula for this compound ? How do I do this?

    asked by Melinda
  255. 7th grade math question ms. sue

    the area of a square boxing ring is 484^2. What is the perimeter of the boxing ring? Isn't the answer 121????

    asked by Delilah
  256. US History

    Why Is Alfred T Mahan Important To Us Today?

    asked by Jonathan
  257. Physics

    A bus travels 340 km south along a straight path with an average velocity of 88 km/h to the south. The bus stops for 22 min, then it travels 230 km south with an average velocity of 75 km/h to the south. How long does the total trip last? Answer in units

    asked by Diondre
  258. Physics

    A helicopter is ascending vertically with a speed of 5.20 m/s. At a height of 125 m above the Earth, a package is dropped from a window. How much time does it takes the package to hit the ground? [Hint: The package's initial speed equals the helicopter's]

    asked by Fabian
  259. Chemistry

    You are in a mountain range with atmospheric air pressure of 520 , and you wish to boil some eggs. What is the approximate boiling point of the water at this air pressure? Express your answer as an integer and include the appropriate units.

    asked by Sydney
  260. history

    One of today's hot political topics is some states' measures to restrict voting. What historical precedents do we have for such efforts, in the South and elsewhere? Why were/are some people concerned about this?

    asked by maria
  261. Calculus

    Find the absolute maximum and minimum vales of the set D. F(x,y) = x^2 + y^2 - 2x, D is the closed triangular region with vertices (2,0), (0,2), and (0,-2). I know that I have to find Fx(x,y) and Fy(x,y) but I'm not sure where to go from there. Any help is

    asked by James
  262. math

    How much simple intrest would 1,000 earn in 275 days at an intrest rate of 4.21 percent?

    asked by ben
  263. living enviornment

    what is the average length of a single cell in micrometers? a)2,000um b)100um 3)10um 4)200um

    asked by katie
  264. physics

    A 3.39 kg block is placed on top of a 11.8 kg block. A horizontal force of F = 61.3 N is applied to the 11.8 kg block, and the 3.39 kg block is tied to the wall. The coefficient of kinetic friction between all moving surfaces is 0.112. There is friction

    asked by Anonymous
  265. busines ethics and starting a small business

    I need exam answers to 25 questions that are on the the above college subject exam.

    asked by Edward
  266. physics

    A 3.39 kg block is placed on top of a 11.8 kg block. A horizontal force of F = 61.3 N is applied to the 11.8 kg block, and the 3.39 kg block is tied to the wall. The coefficient of kinetic friction between all moving surfaces is 0.112. There is friction

    asked by Anonymous
  267. Chemistry

    65.0mL of 16.0M diluted to 440mL. What is the new molarity?

    asked by Anonymous
  268. Chemistry Help!

    Anthracene which contains only Carbon and hydrogen, is an important source of dyes. When 250 mg of anthracene is burned in pure oxygen, 8.64 mg of CO2 and 1.26 mg of H2O are formed. What is the empirical formula of anthracene?

    asked by Alisha
  269. Algebra

    A jar contains red, blue and yellow marbles.The number of red marbles is ten more than the number of yellow marbles and the number of blue marbles is double the number of yellow marbles. If the probability of choosing a yellow marble is one-fifth , how

    asked by Nick
  270. physics

    If a car is traveling at a constant speed of 15 meters per second, goes off a cliff, and needs to land 100 meters from the cliff, how high is the cliff?

    asked by bob
  271. Algebra

    You have to wrap gift boxes for your club project. Each box is 4.5 inches wide, 7 inch long, and 4 inches tall. What size sheet of wrapping paper do you need to cut to cover the box? Gift wrap paper comes in sheets which are 30 inches wide and 36 inches

    asked by Bryan
  272. 7th grade art ms.sue asap please

    1. The ingredients, or building blocks, of an artwork (1 point) studies of art principles of art categories of art elements of art 2. The name of a color (1 point) value intensity hue fue 3. The arrangement of hues in a circular format (1 point) color

    asked by Delilah
  273. Inductively

    how do you do reason inductively evaluate (1)50 explain reasoning?

    asked by tammy
  274. Chemistry! Test tomorrow, pls help !

    we're given the equation: C6H6(l)+Br2(l) --> C6H5Br(l)+HBr(g) you need to prepare 50.0g pf bromobenzene and you expect no more than a 75% yield. How much benzene should you begin with if the yield is 75%. i know that % yield = (actual/theoretical) * 100 %

    asked by Alisha
  275. Math

    Jana took her 3 year old niece out for breakfast. The restaurant they went to was having a special where children under 4 received half off of their meal with the purchase of a regular priced meal. Drinks were not included in the special. If Jana’s meal

    asked by Bailey
  276. finance 370

    How did they round this number off. Value debt310 million +110 value equity million=.738=73.8% Then Value Equity over Value Of Debt +Value of Equtiy $310 million + 110 million=0.262=26.7% How did they get these number

    asked by Gina
  277. Physics

    Consider again the problem of a car traveling along a banked turn. Sometimes roads have a "reversed" banking angle. That is, the road is tilted "away" from the center of curvature of the road. If the coefficient of static friction between the tires and the

    asked by Garcia
  278. ALG2! WORD PROBLEM!

    define a variable and write an inequality for each problem.then solve one half of a number is more than 6 less than the same number.

    asked by tyneisha
  279. Physics

    A compact disc spins at 2.7 revolutions per second. An ant is walking on the CD and finds that it just begins to slide off the CD when it reaches a point 2.8 cm from the CD's center.

    asked by Garcia
  280. physics

    A stone of mass 0.33 kg is tied to a string of length 0.65 m and is swung in a horizontal circle with speed v. The string has a breaking-point force of 45 N. What is the largest value v can have without the string breaking?

    asked by Garcia
  281. physics

    A roller coaster track is designed so that the car travels upside down on a certain portion of the track as shown in the figure below. What is the minimum speed the roller coaster can have without falling from the track? Assume the track has a radius of

    asked by Garcia
  282. math

    write a subtraction problem involving regrouping that has ted reading 304 pages.

    asked by umair
  283. physics

    When a spacecraft travels from Earth to the Moon, the gravitational force from Earth initially opposes this journey. Eventually, the spacecraft reaches a point where the Moon's gravitational attraction overcomes the Earth's gravity. How far from Earth must

    asked by Garcia
  284. physics

    Consider the swimmer in the figure below. Suppose that his swimming speed relative to the water is 5.7 m/s, current = 2.2 m/s, and that the river is 10 m wide. How long will it take for him to cross the river?

    asked by Garcia
  285. physics

    You are an astronaut (m = 90 kg) and travel to a planet that is the same mass and size as Earth, but it has a rotational period of only 15 h. What is your apparent weight at the equator of this planet?

    asked by Garcia
  286. physics

    Suppose that the swimmer in the figure below has a swimming speed relative to the water of 0.44 m/s, while the speed of the current is 2.0 m/s. If it takes the swimmer 180 s to cross the river, how wide is the river?

    asked by Garcia
  287. physics

    The region of the solar system between Mars and Jupiter contains many asteroids that orbit the Sun. Consider an asteroid in a circular orbit of radius 5.7 1011 m. Find the period of the orbit.

    asked by Garcia
  288. physics

    In recent years, a number of nearby stars have been found to possess planets. Suppose, the orbital radius of such a planet is found to be 3.0 1011 m, with a period of 980 days. Find the mass of the star.

    asked by Garcia
  289. physics

    An airplane flies from Boston to San Francisco (a distance of 5000 km) in the morning, then immediately returns to Boston. The speed of the plane relative to the air is 240 m/s. The wind is blowing at 41 m/s from west to east, so it is "in the face" of the

    asked by Garcia
  290. physics

    What is the speed of a satellite in a geosynchronous orbit about Earth?

    asked by Garcia
  291. Algebra Word Plob..PLEASE HELP

    You have to wrap gift boxes for your club project. Each box is 4.5 inches wide, 7 inch long, and 4 inches tall. What size sheet of wrapping paper do you need to cut to cover the box? Gift wrap paper comes in sheets which are 30 inches wide and 36 inches

    asked by Jacob
  292. physics

    A 5.20 package slides 1.57 down a long ramp that is inclined at 13.0 below the horizontal. The coefficient of kinetic friction between the package and the ramp is = 0.305 Calculate the work done on the package by friction. Calculate the work done on the

    asked by Matt
  293. algebra

    use the inequality -4t-8 is less than or equal to 12 a. t is greater than or equal to ? b. t + 4 is greater than or equal to ? c. t- ? is greater than or equal to 0 d. t + 10 is greater than or equal to ? e. 3t is greater than or equal to ? f. t/? is

    asked by Michelle
  294. science

    for many years pellagra was believed to be an infectious disease promoted by unsanitary conditions. it was common in sanatoriums and orphanages but only among the patients and not the staff. a study of the diets showed that suffers of pellagra rarely ate

    asked by anonymous
  295. Science

    An elevator lifts a person weighing 625 newtons a distance of 7 meters. If the elevator uses 875 watts of power to lift the person, how long does it take?

    asked by Anonymous
  296. Business Math

    7. By using the table in the handbook, the present value of $12,000 for six years compounded at 6 percent semiannually is:

    asked by Tanisha
  297. calculus

    Prove (by using a point and a normal vector) that the plane whose intercepts with the coordinate axes are x=1, y=1, and z=1 is given by the equation x+y+z=1

    asked by Alex
  298. PLEASE read over essay

    I did this for chemistry. Are the examples and grammar correct? THANK YOU SO MUCH TO WHOEVER ACTUALLY TAKES THE TIME TO READ THIS I LOVE YOU OMG. Naming Chemical Compounds By: Bryce R The periodic table is made up of the most simplest and complex elements.

    asked by Bryce
  299. Math

    Explain in words, how you would solve: 3(n-8) = 12 + 2n

    asked by Kyle
  300. MATH

    0.4(6x+0.8)+0.18=0.5+2.4x for x=0.5

    asked by taliah
  301. Chemistry

    How many moles of CaCl2 are in 32cm cube of 0.2M solution of CaCl2?

    asked by desperate
  302. APS

    Ben eats a bowl of rice as he walks across the San Francisco Bridge. When he is finished, he drops his empty bowl 67m down to the bay water. What speed does it hit the water with?

    asked by Confused
  303. APS

    The Marshmellow man tromps along the streets of New York City with his blue sailor hat on. He tries to climb up a building to reach Ghostbusters and a gargoyle statue falls 326m to the street below. What height is the gargoyle when it reaches a velocity of

    asked by Confused
  304. Math

    You have to wrap gift boxes for your club project. Each box is 4.5 inches wide, 7 inch long, and 4 inches tall. What size sheet of wrapping paper do you need to cut to cover the box? Gift wrap paper comes in sheets which are 30 inches wide and 36 inches

    asked by Clay
  305. chemistry

    Calculate the solubility of oxygen in water at a partical pressure of 02 of 460 torrat 25 degree celsius

    asked by Crystal
  306. physics

    A car of mass 1410 kg traveling at 26 m/s is at the foot of a hill that rises 115 m in 4 km. At the top of the hill, the speed of the car is 14 m/s. Find the average power delivered by the car's engine, neglecting any frictional losses.

    asked by Rodrigo
  307. lit- the crucible

    I'm writing an essay on Abigail and how she is very persuasive by using fear as a tool of revenge. “Let either of you breathe a word, or the edge of a word, about the other things, and I will bring a pointy reckoning that will shudder you.” “ No, I

    asked by greeny
  308. Advanced physical science

    A fiery ball of wood is loaded into a medieval catapult to be thrown into a castle. Unfortunately, the attacking heathens are not very smart and since geometry and physics were not studied in their time, they launched the ball straight up into the air. The

    asked by Confused
  309. Advanced physical science

    At the top of the Washington monument, a bird drops an acorn into the reflecting pool 169m below. If the acorn has a massof 1.0 kg, with what velocity would it hit the water?

    asked by Confused
  310. Advanced physical science

    An astronaut drops a golf ball to the surface of the moon from a height of 1.5m. The golf ball has a velocity of 2.24 m/s right before it lands on the moon (assume this height to be zero). What is acceleration due to gravity on the moon?

    asked by Confused
  311. chemistry

    A 0.0230 g sample of an unknown was dissolved in 2.260 g of benzene. The molality of this solution, determined by freezing point depression, was 0.0408 m. What is the molecular weight of the unknow substance?

    asked by Crystal
  312. physics

    In a new scenario, the block only makes it (exactly) halfway through the rough spot. How far was the spring compressed from its unstretched length?

    asked by ali
  313. physics

    Two blocks each of mass 3.65 kg are fastened to the top of an elevator as in the figure. (a) If the elevator accelerates upward at 1.48 m/s2, find the tensions T1 and T2 in the upper and lower strings. (p4.21a1), enter the answer for T2, the tension in the

    asked by Anonymous
  314. physics

    A hockey puck is hit on a frozen lake and starts moving with a speed of 14.4 m/s. 3.0 seconds later, its speed is 7.3 m/s. (a) What is its average acceleration?

    asked by Anonymous
  315. Physics

    A frictionless pulley with zero mass is attached to the ceiling. Mass M2 = 0.140 kg is being accelerated downward with 1.30 m/s2. Calculate the mass m1.

    asked by Kattoossa
  316. Calculus

    Find dy/dx in terms of x and y if arcsin(x^5y)=xy^5.

    asked by Mike
  317. phys

    Two concentric circular wire loops in the same plane each carry a current. The larger loop has a current of 8.62 A circulating clockwise and has a radius of 6.09 cm. The smaller loop has a radius of 4.42 cm. What is the current in the smaller loop if the

    asked by opp
  318. physics

    Janet jumps off a high diving platform with a horizontal velocity of 2.25 m/s and lands in the water 1.6 s later. How high is the platform? The acceleration of gravity is 9.8 m/s 2

    asked by David
  319. Statistics

    In a recent study a SRS of 525 employed Americans, 53 individuals indicated that they would fire their boss if they could. Calculate a 90% confidence interval for the population proportion who would fire their boss if they could.

    asked by Lauren
  320. physics

    A hockey puck is hit on a frozen lake and starts moving with a speed of 14.4 m/s. 3.0 seconds later, its speed is 7.3 m/s. (c) How far does the puck travel during the time interval?

    asked by Anonymous
  321. english

    What is the correct spellings of thes two words (a)cinical (b)circlist

    asked by Whizkid
  322. physics

    A crate of mass 55.6 kg is being transported on the flatbed of a pickup truck. The coefficient of static friction between the crate and the trucks flatbed is 0.330, and the coefficient of kinetic friction is 0.320. (a) The truck accelerates forward on

    asked by Anonymous
  323. physics

    A crate of mass 55.6 kg is being transported on the flatbed of a pickup truck. The coefficient of static friction between the crate and the trucks flatbed is 0.330, and the coefficient of kinetic friction is 0.320. (b) The truck barely exceeds this

    asked by Anonymous
  324. math

    How can knowing the multiplication properties help you evaluate 5x(20x63)?

    asked by Kiera
  325. physics

    Two boxes of fruit on a frictionless horizontal surface are connected by a light string as in the figures below, where m1 = 10 kg and m2 = 19 kg. A force of 46 N is applied to the 19 kg box. (a1) Determine the acceleration of the boxes

    asked by Anonymous
  326. math

    If a^x

    asked by Whizkid
  327. physics

    Matt runs away from Ashley. Matt runs 40 m north and 30 m west. What is the minimum distance Ashley must run to catch Matt? Draw the image and label the vectors and scalars.

    asked by Lauren
  328. physics

    Two boxes of fruit on a frictionless horizontal surface are connected by a light string as in the figures below, where m1 = 10 kg and m2 = 19 kg. A force of 46 N is applied to the 19 kg box. Repeat the problem for the case where the coefficient of kinetic

    asked by Anonymous