Questions Asked on
June 15, 2012

  1. physics

    Some children go tobogganing on an icy hill. The start from the rest at the top of the hill. The toboggan and children have a combined mass of 94 kg. The height of the first hill a is 12.0m the height of b is 0, and the height of c is 3.0m. If friction is

    asked by Melissa
  2. physics

    A crate is given an initial speed of 2.9 up the 29 plane shown in the figure . Assume = 0.13 how far up the plane will it go?

    asked by Anonymous
  3. Critical thinking

    I'm having trouble rewriting the ambiguous sentences. I have answered them but i'm not sure that they are right. 2. Please close the door behind you. My answer: Please close the door that is behind you. 3. we heard that he informed you of what he said in

    asked by Rebecca
  4. physics

    Two vehicles collide and stick together. After the collision, their combined y-momentum is 2.40 × 104 kilogram meters/second, and their x-momentum is 7.00 × 104 kilogram meters/second. What is the angle of the motion of the two vehicles, with respect to

    asked by Anonymous
  5. Chemistry

    A solution of iodine (I2) in carbon tetra-chloride(CCl4) is used when iodine is needed for certain chemical tests. how much iodine must be added to prepare a 0.480 m solution of iodine in CCl4 if 100.0g of carbon tetra-chloride is used?

    asked by punk480
  6. chemistry

    Carbon Dioxide reacts with water in blood plasma to form carbonic acid. The equation for this reaction is showing on page 51. Suppose that you are a molecule of carbon dioxide. Describe the chemical reactions that take place when you enter the blood and

    asked by hienz
  7. physics

    A skier traveling 11.0 m/s reaches the foot of a steady upward 19.6° incline and glides 13.8 m up along this slope before coming to rest. What was the average coefficient of friction?

    asked by Claire Holt
  8. maths

    1). Is x= 3 a solution of the equation 2x+5=3(x-2)-2 2). The product of a number and number increased by 8 is 20. Convert this statement to an equation. 3). The area of a rectangle is 54 sq meters whose length is 3m more than its width. Convert this

    asked by kratika
  9. chemistry

    Carbon Dioxide reacts with water in blood plasma to form carbonic acid.Suppose that you are a molecule of carbon dioxide. Describe the chemical reactions that take place when you enter the blood and when you leave the blood. Explain what determines how

    asked by hienz
  10. chemistry

    Carbon Dioxide reacts with water in blood plasma to form carbonic acid.Suppose that you are a molecule of carbon dioxide. Describe the chemical reactions that take place when you enter the blood and when you leave the blood. Explain what determines how

    asked by hienz
  11. chemistry

    Carbon Dioxide reacts with water in blood plasma to form carbonic acid.Suppose that you are a molecule of carbon dioxide. Describe the chemical reactions that take place when you enter the blood and when you leave the blood. Explain what determines how

    asked by HELP PLEASE -CHRISTINE
  12. Physics

    Two balls undergo inelastic collision. The y-momentum after the collision is 98 kilogram meters/second, and the x-momentum after the collision is 100 kilogram meters/second. What is the magnitude of the resultant momentum after the collision?

    asked by Christine
  13. CHEMISTRY

    Carbon Dioxide reacts with water in blood plasma to form carbonic acid.Suppose that you are a molecule of carbon dioxide. Describe the chemical reactions that take place when you enter the blood and when you leave the blood. Explain what determines how

    asked by HELP PLEASE -CHRISTINE
  14. PHYSICS

    Driving in your car with a constant speed of v = 11.7 m/s, you encounter a bump in the road that has a circular cross section, as indicated in the figure below. If the radius of curvature of the bump is r = 34.4 m, calculate the apparent weight of a 65.9

    asked by Matthew Goldberg
  15. Government

    What did westerns monarchies begun adopting in the 19th century that started eroding divine right and paving the way for social contracts

    asked by Ashtyn
  16. Chemistry

    When 1.5 grams of magnesium burns, how many grams of magnesium oxide will be formed? a) Write a balanced chemical equation for the above reaction. b) Show by unit conversion (show conversion factors, ie. 2 g H20 x 1 mole H2O/18 g H2O x ...... x ...... =

    asked by Ashley
  17. Calculus

    Differentiate each function a) y = Cos³ x b) y = Sin(x³) c) y = Sin²xCos3x

    asked by Sarah
  18. Physics

    A wave has a frequency of 325 Hz. What is its period? I did 1/325 = 0.003076 & I answered 0.003 and this answer was wrong. Can anyone help me?

    asked by Kate
  19. Algebra

    Two hundred tickets for the school play were sold. Tickets cost $2 for students and $3 for adults. The total amount collected $490. How many student tickets were sold?

    asked by Lexi
  20. physics

    An automobile having a mass of 1750 kg is placed on a hydraulic lift in a garage. The piston lifting the car is 0.244 m in diameter. A mechanic attaches a pumping mechanism to a much smaller piston, 1.50 cm in diameter, which is connected by hydraulic

    asked by anonymous
  21. algebra 2

    a flagpole casts a 60 foot shadow when the angle of elevation of the sun is 35 degrees. find the height of the flagpole

    asked by nicole
  22. AP Chemistry

    What pressure is a person exerting on the floor if the person weighs 145 lbs and has shoes that contact the floor over a total area of 300. cm^2?

    asked by Angela
  23. chemistry

    What is the molality of a solution composed of 2.55g of acetone (CH3)2CO, dissolved in 200.g of water?

    asked by punk480
  24. Physics

    Assuming that the Earth is spherical and recalling that latitudes range from 0° at the Equator to 90° N at the North Pole, how far apart, measured on the Earth's surface, are Copenhagen (55.67° N latitude), and Rome (41.90° N latitude)? The two cities

    asked by Martha
  25. reading

    Except for a few pigeons, Central Park was deserted. Mist hung above the chilled grass. Patches of old snow, scattered here and there, looked like white puddles. The sun hung just above the horizon, casting red and orange streaks across low-hanging clouds.

    asked by Anonymous
  26. science

    A 51-g piece of ice at 0 C is added to a sample of water at 7-C all of the ice melts and the temp of the water decreases to 0 .If you used the 8200 Khan you expand in energy in one day to heat 47000g of water at 27-C what would be the rise in temp? What

    asked by tabitha
  27. Physics

    A velodrome is built for use in the Olympics. The radius of curvature of the surface is 19.6 m. At what angle should the surface be banked for cyclists moving at 11.5 m/s? (Choose an angle so that no frictional force is needed to keep the cyclists in their

    asked by Jess O.
  28. Physics help please!

    A cylindrical metal can with a radius of 4.25 cm is floating upright in water. A rock is placed in the can, causing it to sink 0.0230 m deeper into the water. What is the weight of the rock?

    asked by Sammy
  29. Math

    1.) Find the producers' surplus if the supply function is: S(q) = q^7/2+3q^5/2 + 54. Assume the supply and demand are in equilibrium at q= 25. 2.) S(q) = q^2 + 12q and D(q) = 900 - 18q - q^2 The point at which the supply and demand are equilibrium is (15,

    asked by Francesca
  30. Physics

    A ball having a mass of 5 kg is attached to a string 1 m long and is whirled in a vertical circle at a constant speed of 13 m/s. (a) Determine the tension in the string when the ball is at the top of the circle. (b) Determine the tension in the string when

    asked by Camilla
  31. College Algebra

    Tina invested $30,000 in a stock. In the first year, the stock increased in value by 10%. In the second year, the stock decreased in value by 20%. What percentage gain is requird in the third year for Tina's stock to return to its original value?

    asked by Nicholl
  32. physics

    Two identical cannons fire cannonballs horizontally with the same initial velocity. One cannon is located on a platform partway up a tower, and the other is on top, four times higher than the first cannon. How much farther from the tower does the

    asked by daniel
  33. Biology

    The release of eggs and sperm near each other into the water occurs during A spawning. B development. C growth. D all of the above. Is it A?

    asked by anon
  34. Physics

    To supply the plumbing system of a New York office building, water needs to be pumped to a tank on the roof, where its height will provide a "head" of pressure for all the floors. The vertical height between the basement pump and the level of the water in

    asked by Steven
  35. Physics HELP

    An ultrasound transducer used to measure the speed of blood cells is oriented at an angle of 45 degrees to the direction of the blood flow. if the frequency of the sound emitted by the transducer is 1.5 Mhz and the doppler shift is 268Hz, calculate the

    asked by Jason
  36. maths

    Fill in the blanks- 1). the sum of two consecutive odd numbers is 84, the number are ________ and________ 2). A number multiplied by 6 and then reduced by 3 gives 69, the number is_______ 3). The number of boys is 3/2 the number of girls in class. the

    asked by kratika
  37. PHYSICS

    A cylindrical metal can with a radius of 4.25 cm is floating upright in water. A rock is placed in the can, causing it to sink 0.0230 m deeper into the water. What is the weight of the rock?

    asked by Jennifer
  38. Physics Velocity Question

    The equation for the displacement in meters of an object moving in SHM is x(t) = 1.50 cos (4.20t) where t is in seconds. (a) What is the maximum speed of the object? (b) At what time does it first reach the maximum speed? I already got 6.3m/s for A and I

    asked by Jennifer
  39. Art

    Hello, I need to decide whether these 3 artworks are considered realistic or stylistic. Ive decided what they are, and want to make sure that i am correct. The first artwork is a mask, It is called the Mask of Moon Goddess by Inuit, I think its stylistic.

    asked by Anonymous
  40. trig

    Give the component form of the resultant vector in the following. NOTE: Answer must be typed in using the following format -- including the parentheses: (#,#). u =(10, 5) -3u=

    asked by Shade
  41. PHYSICS HELP

    A fibre is fixed at one end it is stretched over a pulley (2.0kg) is the mass. if the mass per unit length of the fibre is 82g/m, calculate the velocity of the wave on the stretched fibre. (please show working)

    asked by Lyoto Machida
  42. Math (Simplest Radical Form)

    How do you figure out simplest radical form with variables and/or exponents and/or numbers outside the square root

    asked by Rayyan
  43. physics

    (a) Neglecting air resistance, how fast is the object traveling when it strikes the ground at the end of 2.0 s? First used standard British units and then express the speed in mi/h for a familiar comparison

    asked by Anonymous
  44. geometry

    If m∠BCD = 60 and m∠DEC = 80, what is the measure of ∠DEF

    asked by andrea
  45. Physics

    A ball having a mass of 5 kg is attached to a string 1 m long and is whirled in a vertical circle at a constant speed of 13 m/s. (a) Determine the tension in the string when the ball is at the top of the circle. (b) Determine the tension in the string when

    asked by Camilla
  46. Physics help

    A wave is described by the equation y = (4.5×10−2) sin (1.9x − 3.2t), where lengths are measured in meters and time in seconds. What is the displacement of a particle at position x = 2.7 m at time t = 5.8 s? Note: Remember that the argument of the

    asked by Chris
  47. geometry

    A card is selected from a standard deck of 52 playing cards. A standard deck of cards has 12 face cards and four Aces (aces are not face cards find the probability of selecting. an eight given the card is not a face card. a club given the card is red. A

    asked by angela
  48. Physics check my answer!

    In order to reduce potential danger to the environment, a biohazard laboratory maintains an internal air pressure that is 1% lower than atmospheric pressure. The net force acting on a 1.8-m2 external window of this laboratory due to air pressure is most

    asked by Kayla
  49. Physics

    In this problem, your task is to analyze a lead balloon. The balloon in question is a hollow sphere of diameter of 20.0 m, constructed from a lead foil 0.25 mm thick and filled with helium gas. Below the balloon, a passenger basket is suspended. The mass

    asked by Rob
  50. cjs210

    Will someone please help me find a website to find the answer to these questions? • Throughout policing history, what has been the role of women and minorities? How has the role of women and minorities changed over time? How has this role change affected

    asked by Picaboo
  51. Physics

    A 5000 kg cart carrying a vertical rocket launcher moves to the right at a constant speed of 27.0 m/s along a horizontal track. It launches a 54.8 kg- rocket vertically upward with an initial speed of 33.1 m/s relative to the cart. A) where will the rocket

    asked by Anon
  52. maths

    Match them- a (a-b) is a rational number 1) distributive property b) a+0=0+a=a 2) associative property c) a*(b+c)=a*b+a*c 3) closure property d) a*b=b*a 4) commutative property e) a+(b+c)=(a+b)+c 5) additive identity

    asked by joshi kratika
  53. physics

    a body is thrown vetically up from the ground passes the height 10.2 m twice at an interval of 10s .what was initial velocity?

    asked by sakshi
  54. algebra application

    find the amount of interest and monthly payment for loan. Purchasing a living room set for $3,900 at 12% add-on interest for 2 years. (round monthly payment to the nearest cent)

    asked by Geraldine
  55. math

    Write 12,767 in base sixteen.

    asked by Anonymous
  56. Calculus Review for exam grade 12, please help.

    use the derivatives of y=sinx and y=cosx to develop the derivative of y=tanx

    asked by Henry
  57. language arts

    The coordinating conjunctions that can be used to combine two complete sentences with a comma are “for, and, nor, because, yet, so.”

    asked by lakendra
  58. Science

    Writeacher, I urgently need you to check these sentences, though I believe they don't make sense. Although I'm not a mechanic, I don't think the use of scientific English is correct. 1) I would like to focus on a kind of technology which is used to

    asked by John
  59. Algebra

    A radio tower is supported by a wire fastened to the ground 60 feet away from the base of the tower. If the slope of the wire is 3/2 approximately how long is the wire

    asked by Luckybee
  60. Calculus

    Determine the value of k, so that u = [-3,7] and v = [16,k] are perpendicular.

    asked by Sarah
  61. math

    a bag contains 7 red marbles, 8 blue marbles and 4 green marbles. what is the probablity of choosing a blue marble?

    asked by Anonymous
  62. science

    I need help to prepare survey report on "use of mobiles are the need of an hour". Report should contain questions asked during survey, graphical representations etc.

    asked by Yash
  63. maths

    match them- a) 2(x+3)-5(x-2)=3 1) x= 13/3 b) 7x+2/2=2x+5/3 2) x=4/17 c) 3(2x+5)-2(4x+3)=5 3) x=2

    asked by joshi kratika
  64. probablity

    A bag of marbles has 3 red, 6 blue, and 3 white marbles in it. What is the probability of reaching in and selecting a red marble? (without looking

    asked by whit
  65. Physical Science

    1. You are assigned to take care of a patient who is scheduled to undergo a surgical operation. The doctor told you not to allow the patient to eat for twelve hours. How many minutes is the fasting period? 2. What is the density of a rock (in g/cm3) which

    asked by Andrea
  66. accounting

    kathy burnett works for trinity industries. Her pay rate is 12.84 per hour and receives overtime pay at one and one-half times her regular hourly rate for any hours worked beyond 40 in a week. During the pay period that ended December 31,2013, Kathy worked

    asked by Anonymous
  67. english

    I'm writing an essay on Substance Abuse. Its an informative essay and I am having trouble coming up with a topic. Can you please give me some suggestions? I am leaning towards something to do with marijuana possibly...

    asked by Julie
  68. accounting

    kathy burnett works for trinity industries. Her pay rate is 12.84 per hour and receives overtime pay at one and one-half times her regular hourly rate for any hours worked beyond 40 in a week. During the pay period that ended December 31,2013, Kathy worked

    asked by tracy
  69. Physics(Please respond)

    There is a rod that is split into two sections. The left side is copper with value of 390, temp of 100 degrees c and the length is 2m. The right side is silver, 420, temp 20 degrees celsuis, and length 1m. I need to calculate the temperature. 390 X 1 X

    asked by Hannah
  70. Physics

    What do u mean by phase in wave optics??

    asked by Abhi
  71. Calculus Grade 12

    determine the coordinates of two points on the plane with equation 5x + 4y - 3z = 6

    asked by Henry
  72. math

    whats a math problem for 48 divided by 8 equals 6

    asked by kayla
  73. Physics

    Life scientists use ultracentrifuges to separate biological components or to remove molecules from suspension. Samples in a symmetric array of containers are spun rapidly about a central axis. The centrifugal acceleration they experience in their moving

    asked by Emilia
  74. math

    a bag has 5 silver 3 gold and 2 brass buttons . what is the probability of choosing a silver then a gold button with replacement

    asked by barbie
  75. chemistry

    give the 2 systems of measurement. give at least 5 units used in the English system and 5 units in the metric system.

    asked by ryza
  76. Physics

    A block with mass 0.55 kg on a frictionless surface is attached to a spring with spring constant 43 N/m. The block is pulled from the equilibrium position and released. What is the period of the system?

    asked by Regan
  77. Math

    3x-4y =9 -3x+4y=12

    asked by bella
  78. Math

    0.05x+0.10y=1.30 x+y=19

    asked by Jullian B.
  79. SCI -241

    Write a 350- to 700-word response that explains the associated health problems of the obesity epidemic and eating disorders. Include examples of what you learned from the WileyPlus® Web Link articles you read. Address the following:

    asked by Anonymous
  80. cjs210

    Wll someone please help me find a website to find the answer to this question? describe the recruitment and selection process for a police officer?

    asked by Picaboo
  81. geometry

    In how many different ways can the top eight new indie bands be ranked on a top eight list? The top hit song for each of the eight bands will compete to receive monetary awards of $1000,$500,$250,and $100,respectively. In how many ways can the awards be

    asked by angela
  82. Math - Compound Inequalities

    A car rental agency charges A. $60 per day or B. $30 a day plus $.30/mile. If you plan to drive 200 miles in one day, which is the best plan for you?

    asked by Stefani
  83. english

    how do i write a thesis

    asked by bob
  84. Calculus

    Evaluate, rounding to two decimal places, if necessary a) ln 5 b) ln e² c) (ln e)²

    asked by Sarah
  85. English Writing

    Apology letter Please help me thanks in advance? Hotel manager is writing a letter to one his customer because there is no room available for him. He came to watch football match with his family now. hotel manager put him up in the motel and paid for that.

    asked by Sally
  86. science

    I need help to prepare survey report on "use of mobiles are the need of an hour". Report should contain questions asked during survey, graphical representations etc.

    asked by Yash
  87. maths

    Give reasons 1) Every parallelogram is not a rectangle. 2) Every rhombus is not square. 3)It is possible to have exterior angle of a regular polygon as 40 degree. 4) It is not possible to have interior angle of regular polygon as 145 degree.

    asked by joshi kratika
  88. hum/111- critical thinking

    why do you think timing is important when you are building a persuasive case?

    asked by stonetropical
  89. maths

    If hair bands cost 75 pence for five, how many would you be able to buy for £2.70?

    asked by Anonymous
  90. physics

    reaction of lead nitrate with sodium iodide

    asked by teele
  91. geometry

    If m∠BCD = 60 and m∠DEC = 80, what is the measure of ∠DEF

    asked by Anonymous
  92. geometry

    On a vacation, Bridget and her family traveled 225 miles at 67 mph. How long did the trip take? (Round to the nearest hundredth

    asked by Anonymous
  93. Math

    Need to make a monthly amortization schedule. Borrowing 16000 over 4 years at 3.5%. Do I need to calculate for 48 months in order to do this project correctly? I do all the calcs for 48 months and I still end up with approx a payment left over?

    asked by Lori
  94. Management Accounting

    Subtask 3b: The Antigua Blood Bank, a private charity partly supported by government grants, is located on the Caribbean island of Antigua. The Blood Bank has just finished its operations for September, which was a particularly busy month due to a powerful

    asked by Nam
  95. English

    What is the subject in Thank you

    asked by seema
  96. acc/291

    A measure useful in evaluating the efficiency in managing inventories is:

    asked by at
  97. child care management

    According to leeds,at snack time,children sould be given _ of each food foreach yea of theie lives.

    asked by shelby
  98. Statistics

    among customers- 70% buy popcorn, 40% buy ice cream, and 25% by both. Suppose you pick one customer at random. Find the probability the customer buys popcorn or ice cream.

    asked by Jasmine
  99. math

    1-1/square root 3

    asked by Help
  100. chemistry

    what the rules to be followed in performing he 4 fundamental operaions using scientific notation?

    asked by diana
  101. Chemistry-please help quick!!

    Write the balance chemical equation for lime.

    asked by Gidix
  102. Chemistry-please help quick!!

    1.Draw an atomic structure for hydrogen combining with chlorine. 2. Write the full name of elements in copper sulphate and radicals followed by its symbols and balance the equation.

    asked by Gidix
  103. Chemistry-please help quick!!

    Write a balance equation for alluminium nitrate and draw an atomic structure for alluminium nitrate...

    asked by Gidix
  104. finance

    how do we end up with salvage value if the item is depreciated the cost of the item either over a period of years or all in one year? How does salvage value work?

    asked by jackie
  105. Chemistry

    Show how an atomic structure look like

    asked by Gidix
  106. Reading

    I need help with a assignment on a 150 to 300 words that summarizes the steps to be taken in the revision process.

    asked by Jessica
  107. history

    Which of the following was not an innovation that came about due to militarization in the 1800's?

    asked by Anonymous
  108. Business math

    You just move into your new home for which you have a 30 year mortagage of $60,000 at 7%. Your new neighbor Jack tells you that if you double the amount of your payment each month you will cut the length of time you pay in half. Is he correct? would the

    asked by Anonymous
  109. Calculus

    Differentiate each function a) y = -3x^2 + 5x - 4 b) f(x) = 6/x - 3/(x^2) c) f(x) = (3x^2 - 4x)(x^3 + 1) thank you in advance :)

    asked by Sarah
  110. Calculus

    Determine the equation of the tangent line to the curve y = 2x²-1 at the point where x = -2

    asked by Sarah
  111. math

    what is the answer of 16=4*4= 81=9*9= 100=2*5*2*5= 12*12= 144=3*4*3*4=

    asked by leane hart garcia
  112. Physical Science

    What are the different kinds of overlapping sciences?

    asked by Jenny
  113. physics

    assume a diver breathes a mixture of Oxygen and Helium. by weight what ratio of helium to oxygen must be used if the diver is at an ocean depth of 50 meters?

    asked by Anonymous
  114. math

    A pie plate has a diameter of 22 cm. How much counter space is needed to display 8 pies?

    asked by Randy
  115. physics

    a base ball player hits a home run and the ball lands in the left field seats 10m above the point at which the ball was hits. the ball lands with a velocity of 20m/s at angle of 30 degere below the horizontal.ignoring air reference find the initial

    asked by abebe