# If a bowling ball hits a wall with a force of 6 N the wall exerts what force back on the bowling ball? the choices are 0N 3N 6N 12N I think its 6N

33,166 questions, page 22
1. ## physics

You hit a 0.2 kg golf ball up at 40o from the horizontal. It travels for 4.86 s and stops on an elevated green 10 m above its initial height traveling down at an angle of 35.4o below the horizontal. What is the total impulse on the golf ball when it hits

asked by Anonymous on July 27, 2013
2. ## Physics

A person of mass 83.8 kg escapes from a burn- ing building by jumping from a window situ- ated 25 m above a catching net. The acceleration of gravity is 9.8 m/s2 . If air resistance exerts a force of 109.1 N on him as he falls, determine his speed just

asked by Kirbi on June 18, 2014
3. ## Physics, van de graff generators...

When a small metal ball with a charge is placed in an electrical field supplie dby a van de graff generator, it experiences a force from the generator, and thus it applies a reaction force. But does the ball also apply a force met with a reaction force of

asked by TJ on June 22, 2006
4. ## Physics

A boy is standing on a skateboard holding two 5.0 kg bowling balls. Initially they are moving to the left at a speed of 3.0 m/s. At one point the boy throws one ball to the right at 4.0 m/s causing his speed to increase. Before he can slow down, he throws

asked by Jordan on November 29, 2012
5. ## Physics

An upward force of 35 N is applied via a string to lift a ball with a mass of 2.1 kg. (a) What is the net force acting upon the ball? (b) What is the acceleration of the ball?

asked by Mina on February 20, 2012
6. ## Physics

A tennis player hits a ball at ground level, giving it an initial velocity of 24 m/s at 57 degrees above the horizontal. (a) what are the horizontal and verticla components of the ball;s initial velocity? (b) how high above the ground does the ball go? (c)

asked by Sarah on June 7, 2009
7. ## Calculus

A spherical balloon with radius 3 inches is partially filled with water. If the water in the balloon is 4 inches deep at the deepest point, how much water is released when the balloon hits the wall and breaks?

asked by Andy on February 18, 2015
8. ## Math

Peter wants to hang his paintings on a wall that is 2 1/2 meters high and 5 1/2 meters wide. He hangs four paintings, each of which is 1 1/4 meters high and 2/3 meter wide. what area of the wall is NOT covered by paintings?

asked by Derrianna on February 18, 2015
9. ## Math Calculus

The foot of a 30-foot ladder is being pulled away from a vertical wall at a rate of 1 foot per minute. When the top of the ladder is 6 feet from the ground, at what rate is the top of the ladder moving down the wall?

asked by Meg on July 8, 2011
10. ## physics

Two workers are moving a slab of ice (m = 290 kg) across the factory floor. As seen from above, one worker exerts a force of 415 N at an angle of -20o, and the other exerts a force of 470 N at an angle of 50o. What is the magnitude of the acceleration of

asked by Tessa on September 14, 2016
11. ## Physics

Charge A, +1 μC, is positioned at the origin of a coordinate system as shown below. Charge B, −1 μC, is fixed at x = 3 m. (a) Determine the magnitude and direction of the force that charge B exerts on charge A. (b) What is the force that charge A

asked by Alyssa on January 29, 2016
12. ## Physics

1) A box m1 = 9.30 kg is stacked on top of another box m2 = 20.0 kg, placed on the floor inside an elevator. When the elevator is accelerating downward with a magnitude of 3.72 m/s2, what is the normal force that box m1 exerts on box m2? What is the normal

asked by Mike on October 3, 2015
13. ## Physics

A tennis player hits a ball at ground level, giving it an initial velocity of 24 m/s at 57 degrees above the horizontal. (a) what are the horizontal and verticla components of the ball;s initial velocity? (b) how high above the ground does the ball go? (c)

asked by Sarah on June 4, 2009
14. ## physics

A child on a beach kicks a beach ball, giving it an initial velocity of 4.0 m/s. It was sitting on the ground when given the kick. The ball lands on the beach 5m away and closer to the ocean, with a speed of 1.6m/s just before it hits. the final landing

asked by bec on November 7, 2011
15. ## Physics

A football is kicked from the ground at 27 m/s at an angle of 42 degrees above the horizontal (ground). No one gets in the way until after it hits the ground. Use the value g=9.8 m/s^2. Assuming that the ground is level and that there is negligible air

asked by Sandy on October 27, 2010
16. ## Physics

A football is kicked from the ground at 27 m/s at an angle of 42 degrees above the horizontal (ground). No one gets in the way until after it hits the ground. Use the value g=9.8 m/s^2. Assuming that the ground is level and that there is negligible air

asked by Sandy on October 27, 2010
17. ## physics

Consider a 626N weight held by two cables. The left hand cable had tension T and makes an angle of theta with the wall. The right hand cable had tension 720N and makes an angle of 27 degrees with the ceiling. What is the tesion T in the left hand cable

asked by alexa on July 12, 2011
18. ## applied maths

Partv1-v2cle A and B have masses 0.75 and 0.65 respectively. They are approaching each other moving along a straight line with speed 6m/s and 4m/s respectively. The coefficient between them is 4/3. After collision,the direction of motion of B is reversed.

asked by yhakubu on November 25, 2016
19. ## Math

Please help. I have the answers to these problems but I'd like to know how to solve it step by step. 1. Air is being pumped into a spherical balloon at the rate of 1.754 cubic centimeters per second. The balloon maintains a spherical shape throughout. How

asked by Jane on March 6, 2015
20. ## AP Physics

22. a)You are a pirate working for Dread Pirate Roberts. You are in charge of a cannon that exerts a force 20000 N on a cannon ball while the ball is in the barrel of the cannon. The length of the cannon barrel is 2.19 m and the cannon is aimed at a 32

asked by jeff on February 26, 2011
21. ## physics

A golfer hits a ball from the origin with an initial speed of 30.0 m/s at an angle of 50 degrees above the horizontal. The ball lands on a green that is 5.00 m above the level where the ball was struck. (a) How long was the ball in the air? (b) How far has

asked by Joseph on October 26, 2018
22. ## physics

A golfer hits a ball from the origin with an initial speed of 30.0 m/s at an angle of 50 degrees above the horizontal. The ball lands on a green that is 5.00 m above the level where the ball was struck. (a) How long was the ball in the air? (b) How far has

asked by goober on November 1, 2018
23. ## physics

One end of a uniform 4.0-m long rod of weight is supported by a cable. the other end rests against the wall, where it is helf by friction. The co-efficient of static friction between the wall and the rod is .50 Determine the minimum distance,x,from point A

asked by cyndi on January 25, 2007
24. ## physics

There is a clever kitchen gadget for drying lettuce leaves after you wash them. It consists of a cylindrical container mounted so that it can be rotated about its axis by turning a hand crank. The outer wall of the cylinder is perforated with small holes.

asked by Tyler on January 26, 2017
25. ## physics

There is a clever kitchen gadget for drying lettuce leaves after you wash them. It consists of a cylindrical container mounted so that it can be rotated about its axis by turning a hand crank. The outer wall of the cylinder is perforated with small holes.

asked by Angela on October 23, 2010
26. ## Ch. 5 physics help!

There is a clever kitchen gadget for drying lettuce leaves after you wash them. It consists of a cylindrical container mounted so that it can be rotated about its axis by turning a hand crank. The outer wall of the cylinder is perforated with small holes.

asked by Hannah on February 10, 2011
27. ## Physics

There is a clever kitchen gadget for drying lettuce leaves after you wash them. It consists of a cylindrical container mounted so that it can be rotated about its axis by turning a hand crank. The outer wall of the cylinder is perforated with small holes.

asked by Angela on October 23, 2010
28. ## physics

sphere A has a mass of 4.2*10^-2 kg and is tethered to a wall by a thin thread. Sphere a has an excess of 1.2 *10^12 electrons. Sphere B has a deficit of 3.5*10^12 electrons and is o.23 m from sphere A a) determine the angle between the thread and the wall

asked by ali on January 12, 2013
29. ## physics

sphere A has a mass of 4.2*10^-2 kg and is tethered to a wall by a thin thread. Sphere a has an excess of 1.2 *10^12 electrons. Sphere B has a deficit of 3.5*10^12 electrons and is o.23 m from sphere A a) determine the angle between the thread and the wall

asked by josh on January 13, 2013
30. ## Maths

A ball is thrown vertically upwards at 3 m s-1 from 1m above ground level (I) write down the equation for the height of the ball above the ground after t seconds (while the ball is in the air). (II) use your answer to find the time it takes the ball to

asked by Ed on November 17, 2016
31. ## algebra

A baseball player hits a ball toward the outfield. The height h of the ball in feet is modeled by h(t) = -16t2 + 22t + 3, where t is the time in seconds. In addition, the function d(t) = 85t models the horizontal distance d traveled by the ball. If no one

asked by megan on April 1, 2014
32. ## Physics

Two artifacts in a museum display are hung from vertical walls by very light wires. Wire T1 is horizontal from the left wall and goes to a center weight of 177N and wire T2 is at a 53 degree angle with the right wall heading from right to left downwards

asked by Brock on December 6, 2014
33. ## Mechanics

A 5kg steel block slides down a vertical wooden wall while you push on it with a force F at 40° to the horizontal.The coefficient of kinetic friction between the sliding surfaces is 0.7.What size of force F is required to apply to cause the block to slide

34. ## physics

The following data concerns a tennis ball at a given instant before it is struck by a tennis racket; horizontal momentum of tennis ball= 2.4Ns kinetic energy of ball= 45J a) why is correct to give the direction of the momentum but not the kinetic energy b)

asked by Kim on October 16, 2006
35. ## physic

A 1019kg shark is supported by an 85kg rope attached to a 4.00-m rod that can pivot at the base. (a) Calculate the tension in the cable between the rod and the wall, assuming that the cable is holding the system in the position shown in Figure below. Find

asked by miran on June 11, 2015

We will now examine how much time we need to stop a ship-engine-like cylinder. Suppose you take a rotating cylinder and let it roll to the right until it reaches a vertical wall. It then spins against the two walls as shown in the picture, slowly slowing

asked by Steven on August 6, 2013
37. ## Math

A baseball player hits a ball up in the air with an upward velocity of 18 ft/sec. The equation that gives the height of the ball at any time "t" is h(t) = -8t(t) + 18t +5. How long did it take for the ball to hit the ground? Sorry I don't know how to type

asked by JB on November 9, 2017
38. ## Physics

A tennis ball is struck such that it leaves the racket horizontally with a speed of 53 m/s. The ball clears the net and hits the ground a horizontal distance 29 m from where it was hit. How long was the ball in the air and how high was the ball above the

asked by Angelina on May 1, 2008
39. ## Physics

A tennis ball is thrown horizontally from an elevation of 20.60 m above the ground with a speed of 19.0 m/s. (a) Where is the ball after 2.00 s for the horizontal and vertical position? (b) If the ball is still in the air, how long before it hits the

asked by Drew on September 13, 2012
40. ## Physics

One end of a rubber band with a length L is attached to a wall. The rubber band is held horizontally and the loose end is pulled away from the wall at a speed v, stretching the band. Simultaneously, an ant begins to crawl away from the wall along the

asked by Nathan on August 15, 2005
41. ## physics

At one point during its swing, a wrecking ball exerts a tension force of FT = 9825 N on its cable, which makes an angle of α = 25.0° with the horizontal. The crane's 9.00-m-long boom is at an angle of θ = 60.0° with the horizontal. What is the torque

asked by joy on April 12, 2018
42. ## Physics

A container is initially partitioned by a wall into two compartments. The left compartment has volume V1 and the right compartment has volume V2. Both compartments are filled with identical ideal gases at the same temperature T and with an equal number of

asked by Paul on November 19, 2015
43. ## Calculus

On planet Calculi, acceleration due to gravity is -20 ft/sec^2. A ball is thrown upward with an initial velocity of 40ft/sec from an initial height of 50. a) Write the equation for the height of the ball, s(t), at time t. b) Find the velocity when the ball

asked by Anonymous on February 19, 2015
44. ## physics

A red ball is thrown down with an initial speed of 1.2 m/s from a height of 25.0 meters above the ground. Then, 0.6 seconds after the red ball is thrown, a blue ball is thrown upward with an initial speed of 22.9 m/s, from a height of 0.8 meters above the

asked by ali on September 3, 2012
45. ## Physics

A red ball is thrown down with an initial speed of 1.3 m/s from a height of 28.0 meters above the ground. Then, 0.6 seconds after the red ball is thrown, a blue ball is thrown upward with an initial speed of 24.7 m/s, from a height of 0.8 meters above the

asked by Funnyguy on January 26, 2013
46. ## physics

The force shown in the figure below is the net eastward force acting on a ball. The force starts rising at t=0.012 s, falls back to zero at t=0.062 s, and reaches a maximum force of 35 N at the peak. Determine with an error no bigger than 25% (high or low)

asked by Elisa on July 2, 2008
47. ## math

a contractor needs two men and 5 litres of paint to paint on a fenced wall that is 40m by 3m in 9 hours. how many men and how much paint does he need to paint a fenced wall 20m by 12m in 3 hours

asked by ruth on August 21, 2018
48. ## Englsh

1. Let's break up the wall. 2. Let's break the wall. (What is the difference between the two sentence?) 3. He wanted to get some rest. 4. He wanted to take some rest. (Are both OK? 5. He got rest after working hard. 6. He took a rest after wroking hard.

asked by rfvv on June 4, 2012
49. ## Physics

A 0.150kg baseball is thrown upwards with an initial speed of 20.0 m/s. What is the force on the ball when it reaches half its maximum height? (Disregard air resistance.) What is the force on the ball when it reaches its peak? The force on the ball is

asked by Danielle on April 9, 2007
50. ## physics

A baseball player slams a fastball towards left field. The ball is hit 1.00 m above the plate at an initial velocity of 3.0 m/s at a 30 degree angle above the horizontal. The left field wall is 113 m away and is 3.00 m high. Is this a home run shot or

asked by Ashley on September 26, 2013
51. ## physics

A baseball player slams a fastball towards left field. The ball is hit 1.00 m above the plate at an initial velocity of 36.0 m/s at a 30 degree angle above the horizontal. The left field wall is 113 m away and is 3.00 m high. Is this a home run shot or

asked by Ashley on September 26, 2013
52. ## physics

Let's pretend the Qs are actual numbers. So an unstretched, mass less spring constant Q3 N/m and length Q10 meters is attached between a wall and a mass of Q5 kg. The coefficient of both static and kinetic friction between the mass and the table is Q13. A

asked by autumn on December 2, 2009
53. ## physics

A worker exerts a 140 N horizontal force on a 41 kg crate. The crate's acceleration across a level floor is 0.90 m/s2. Find the frictional force that the floor exerts on the crate.

asked by jack on November 18, 2009
54. ## science

A ball is thrown upwards and reaches the ground once again after 4 sec: (a)calculate the height that the ball reaches (b)the total distance covered by the ball (c)the velocity with which the ball hits the ground

asked by sebenano on May 12, 2016
55. ## Physics

A 3.0 m beam with mass 50.0 kg is attached to a wall with a hinge. A rope is connected to the middle of the beam and the wall forming a 60 degree angle with respect to the beam. A mass of 25.0 kg is set on the beam at an unknown distance. a. Draw a free

asked by Charlie on April 23, 2012
56. ## physics

(c) A ladder with length L and mass m rests against a wall. Its upper end is a distance h above the ground (Figure 13.3). The center of gravity of the ladder is one-third of the way up the ladder. A fire fighter with mass M climbs halfway up the ladder.

asked by PURITAE on May 21, 2013
57. ## physics

a golfer hits a golf ball an initial velocity of 54m/s [42 degrees above the horizontal]. the ball lands on an elevated green that is 14m higher that the level from which the golfer hit the ball. a) how far away horizontally from the golfer does the ball

asked by eddie on March 19, 2015
58. ## physics

a golfer hits a golf ball an initial velocity of 54m/s [42 degrees above the horizontal]. the ball lands on an elevated green that is 14m higher that the level from which the golfer hit the ball. a) how far away horizontally from the golfer does the ball

asked by eddie on March 19, 2015
59. ## kvb

Sam hits a golf ball with a five-iron a distance of 120 m horizontally. A tree 45 m high and 35 m in front of Sam is directly in the path of the ball. Will the ball clear the tree if the ball makes a parabolic curve and has maximum height of 80 m?

asked by veera on October 11, 2011
60. ## Physics

A bowling ball is rolled up an incline. If the ball has a speed of 12 m/s at the base of the incline, to what height h on the incline will the center mass travel?

asked by Anon on October 18, 2011
61. ## Physics

Which of the following represent examples of the following situation: An object that starts at the origin at t=0 and at some time later its displacement from origin is zero but the velocity is not zero: 1)An object in a uniform circular motion around a

asked by Logan on September 1, 2011
62. ## Physics

Which of the following represent examples of the following situation: An object that starts at the origin at t=0 and at some time later its displacement from origin is zero but the velocity is not zero: 1)An object in a uniform circular motion around a

asked by Logan on September 1, 2011
63. ## physics

A (10.25) kg bowling ball is hung on a (11.50) m long rope. It is then pulled back until the rope makes an angle of (39.0) degrees with the vertical and released. Find the speed of the ball is at the lowest point. Give your answer in m/s and with 3

asked by l on February 25, 2017
64. ## PHYSICS

A 7 kilogram bowling ball is dropped from a fourth story window. If each story is 3 meters high, use energy conservation (not the equations of motion) to find the ball's velocity when it strikes the ground. Ignore air resistance.

asked by TRACY on February 26, 2012
65. ## PHYSICS

A 7 kilogram bowling ball is dropped from a fourth story window. If each story is 3 meters high, use energy conservation (not the equations of motion) to find the ball's velocity when it strikes the ground. Ignore air resistance. Thank you

asked by GRISSELL on February 23, 2012
66. ## physics

A tennis ball is dropped from the top of a building. It falls for 2.5 seconds before it hits the ground. (a) What velocity is the tennis ball traveling right before it hits the ground? (b) How high is the building?

asked by Kristin on January 21, 2010
67. ## physics

In the figure we see two blocks connected by a string and tied to a wall, with theta = 33°. The mass of the lower block is m = 1.0 kg; the mass of the upper block is 2.0 kg. The tension of the string connecting the blocks is 5.337. Find the tension in the

asked by Kate on July 28, 2010
68. ## Chem

stomach wall has a protective lining of mucous that prevent the acid from penetrating the underlying tissues. using asprin too often can damage the stomach wall. Aspirn is a weak carboxlyliic acid with a Ka of 3.2 x 10^-4. HC8H7O2CO2(aq) H^+(aq) +

asked by Lena on July 26, 2009
69. ## Calculus

The height, s, of a ball thrown straight down with initial speed 32 ft/sec from a cliff 48 feet high is s(t) = -16t^2 - 32t + 48, where t is the time elapsed that the ball is in the air. What is the instantaneous velocity of the ball when it hits the

asked by nrosen on October 13, 2015
70. ## physics

What is the uncertainty of a physics lab? What does uncertainty mean? Let's say I'm measuring a height of where the ball is on the ramp and let go of the ball and the ball hits the ground and we use our eyes to see how far the ball lands from the ramp next

asked by Matt Damon on January 17, 2016
71. ## Math

A basketball is tossed from the top of a 3m wall. The path of the basketball is defined by the relation y=-x^2+2x+3 where x represent the horizontal distance travelled, in metres, and y represents the height, in metres, above the ground. A) How far has the

asked by Sarah on October 8, 2017

A cube has 8 vertices, 12 edges, and 6 square faces. A soccer ball (also known as a buckyball or truncated icosahedron) has 12 pentagonal faces and 20 hexagonal faces. How many vertices and how many edges does a soccer ball have? A circular table is placed

asked by Josh on April 16, 2014
73. ## physics conduction

a one brick thick wall of 10cm thickness has temperatures 40deg C and 5deg C at the surfaces. if the thermal conductivity of the brick is 0.6W per m per K, what is the rate of heat flow per unit area W per m square through the bricks if steady state

asked by ridhi on June 1, 2012
74. ## Physics

A batter hits a pitched ball when the center of the ball is 1.35 m above the ground.The ball leaves the bat at an angle of 45° with the ground. With that launch, the ball should have a horizontal range (returning to the launch level) of 106 m. (a) Does

asked by Devin on October 9, 2012
75. ## Physics - Question

A ball of 250g hits the floor at a velocity of 2,50 m/s at an angle of 70* relative to the vertical. The vertical force in function with time between the floor and the ball is: from 0 to 50 N : from 0 to 1 sec. from 50 N to 100 N : from 1 to 2 sec.

asked by Raf on February 7, 2012
76. ## physics

A 0.9 kg hollow ball with a radius of 0.12 m, filled with air, is released from rest at the bottom of a 2.0 m deep pool of water. How high above the water does the ball shoot upward? Neglect all frictional effects, and neglect the ball's motion when it is

asked by Jen on December 10, 2006
77. ## physics

Betty's ball and Fred's ball have the same size, but Fred's ball is hollow. Wilma's ball and Barney's ball are scaled down versions of Betty's ball and Fred's ball respectively. They all place their bowling balls on the same pitch incline and release them

asked by Kelly on April 17, 2018
78. ## physics

A box is being lowered down a wall at constant speed by a girl, as shown. Her hand is pushing on the edge of the box with 50 N of force at a 45° angle above the horizontal. The box weighs 40 N.

asked by mike on April 24, 2014
79. ## geometry

A 25-foot ladder is placed against a vertical wall of a building. The base of the ladder is 7 feet from the base of the wall. If the top of the ladder slips 4 feet, how many feet will the base of the ladder slide?

asked by M on May 14, 2010
80. ## Maths

To use an extension ladder safely, the base must be 1 m out from the wall for every 2 m of vertical height. a) What is the maximum angle of elevation, to the nearest degree, to the top of the ladder? b) If the ladder is extended to 4.72 m in length, how

asked by Jane on December 15, 2015
81. ## science

To measure the static friction coefficient between a 1.7-kg block and a vertical wall, the setup shown in the drawing is used. A spring (spring constant = 416 N/m) is attached to the block. Someone pushes on the end of the spring in a direction

asked by xxxxxxx on January 6, 2016
82. ## physics

To measure the static friction coefficient between a 1.6-kg block and a vertical wall, the setup shown in the drawing is used. A spring (spring constant = 400 N/m) is attached to the block. Someone pushes on the end of the spring in a direction

asked by Donna on November 26, 2013
83. ## physics

A 1.00 kg hollow ball with a radius of 2.2^10^-1 m, filled with air, is released from rest at the bottom of a 1.50 m deep pool of water. How high above the water does the ball shoot upward if the upward force exerted by the fluid on the ball 40 N? Neglect

asked by Sandhya on October 27, 2008
84. ## science

If a bat with a mass of 5 kg and acceleration of 2 m/s2 hits a ball whose mass is 0.5 kg in the forward direction, what is the reaction force of the ball on the bat? 10 N, forward 10 N, backward 0.5 N, upward 0 N, forward Is it the first one?

asked by dianni on January 11, 2019
85. ## Physics

A tennis player hits a tennis ball (m = 0.0550 kg) with a force of 32.2 N over a time interval of 0.22 s. If the ball as a velocity of 42.2 m/s before being hit and 87.8 m/s after being hit, how much work did the tennis player do?

asked by Kevin on March 28, 2018
86. ## Biology

Just need this checked: 'The cytoskeleton of eukaryotes serves many functions. One of these functions is served in prokaryotes by a different major structure. Which structural feature is it? How do these different structures serve the same function in the

asked by mysterychicken on February 5, 2010
87. ## physics

A tank filled with water has marks every 10 cm on one wall. The refractive index is 1.33 for water in the tank. You observe the marks out in air, from the opposite wall and with your eye level with the top of the water. Which is the lowest or highest mark

asked by crystal on April 6, 2011
88. ## Physics

A 15 kg uniform ladder leans againt a wall in the atrium of a large hotel. The ladder is 8m long, and it makes an angle as 60 degree with the floor. The coefficient of static friction between the floor and the ladder is u+ 0.45. Assume the wall is

asked by Chong on November 6, 2012
89. ## physics intro

A ball of mass 0.50 kg is thrown straight up at 6.0 m/s. (a)What is the initial momentum of the ball? (b) What is the momentum of the ball at its peak? (c)What is the momentum of the ball as it hits the ground

asked by ben green on October 7, 2014
90. ## physics

A spring loaded gun is used to shoot a 1.3 kg ball from a rooftop. When the gun is fired, a compressed spring will be released shooting the ball into the air. The ball will travel in a parabolic path eventually striking the ground below. The gun is at an

asked by Anonymous on May 5, 2013

The Cay Which of the following passages from the novel best describes the setting? A) I was not frightened just terribly excited B) The fort looks as though it came out of a storybook with gun ports along the high wall that face the sea ***** I choose this

asked by Michael on December 10, 2014
92. ## STATS

The vice-president of a business firm has reviewed the records of the firm's personnel and found that 70% of the employees read The Wall Street Journal. If the vice president was to choose 12 employees at random, what is the probability that the number of

asked by tim on February 27, 2012
93. ## Physics (verification)2

I would love for someone to please verify my solution for this problem: A former amusement park attraction consisted of a huge vertical cylinder rotating rapidly around its axis. The rotation speed should be sufficient for the people found inside to be

asked by Greg on December 10, 2011
94. ## Physics (verification)

I would love for someone to please verify my solution for this problem: A former amusement park attraction consisted of a huge vertical cylinder rotating rapidly around its axis. The rotation speed should be sufficient for the people found inside to be

asked by Greg on December 9, 2011
95. ## physics

Part 2 You are a pirate working for Dread Pirate Roberts. You are in charge of a cannon that exerts a force 20000 N on a cannon ball while the ball is in the barrel of the cannon. The length of the cannon barrel is 2.19 m and the cannon is aimed at a 32◦

asked by ally on February 25, 2011
96. ## Physics

Part 1 You are a pirate working for Dread Pirate Roberts. You are in charge of a cannon that exerts a force 10000 N on a cannon ball while the ball is in the barrel of the cannon. The length of the cannon barrel is 2.47 m and the cannon is aimed at a

asked by Mike on February 27, 2011
97. ## Physics

Part 1 You are a pirate working for Dread Pirate Roberts. You are in charge of a cannon that exerts a force 10000 N on a cannon ball while the ball is in the barrel of the cannon. The length of the cannon barrel is 2.47 m and the cannon is aimed at a

asked by Dave on February 27, 2011
98. ## Physics

If a 60 kg person stands on a low wall with her full weight on the ball of one foot and the heel free to move, the stretch of the Achilles tendon will cause her center of gravity to lower by about 2.5 mm. What is the spring constant of her Achilles tendon?