1. phy

    A 175 kg horizontal beam is supported at each end. A 300 kg piano rests a third of the way from one end. What is the vertical force on the support closest to the piano? N What is the vertical force on the support furthest from the piano? N

    asked by ami on October 22, 2010
  2. calculus

    1. A particle moves along the x-axis, it's position at timer given by x(t)=t/(1+t^2), t greater than or equal to 0,where t is measured in seconds and x in meters. a) find the velocity at time t. I am a little confused.. Do I find the derivative by using

    asked by Anonymous on November 16, 2014
  3. physics

    Highway safety engineers build soft barriers such as the one shown in Figure 3-21, so that cars hitting them will slow down at a safe rate. A person wearing a safety belt can withstand an acceleration of -3.0 102 m/s2. How thick should barriers be to

    asked by Sasha on October 27, 2009
  4. Algebra 2

    I need help making a table 3. One of the fireworks is launched from the top of a 70ft tall building with an initial upward velocity of 150 ft/sec. a. What is the equation for this situation? g=-32ft/s^2 b. When will the firework land if it does not

    asked by S.Burris on January 22, 2016
  5. Algebra 2 pt 2

    I need help making a table 3. One of the fireworks is launched from the top of a 70ft tall building with an initial upward velocity of 150 ft/sec. a. What is the equation for this situation? g=-32ft/s^2 b. When will the firework land if it does not

    asked by Anon on January 22, 2016
  6. Physics

    A 190-kg merry-go-round in the shape of a uniform, solid, horizontal disk of radius 1.50 m is set in motion by wrapping a rope about the rim of the disk and pulling on the rope. What constant force would have to be exerted on the rope to bring the

    asked by Samantha on October 31, 2012
  7. PHYSICS

    A 190-kg merry-go-round in the shape of a uniform, solid, horizontal disk of radius 1.50 m is set in motion by wrapping a rope about the rim of the disk and pulling on the rope. What constant force would have to be exerted on the rope to bring the

    asked by PLEASE HELP on October 31, 2012
  8. physic

    3. I have two identical dust particles. They are spheres with diameters of 0.0001 meter (about the same as a hair). They have the same density as water so they each have a mass of 10-12 kg. If each dust particle goes through a discharge so that 2.40 „e

    asked by sabrina on January 21, 2011
  9. Physics. Please!!

    If the force on the tympanic membrane (eardrum) increases by about 1.50 N above the force from atmospheric pressure, the membrane can be damaged. When you go scuba diving in the ocean, below what depth could damage to your eardrum start to occur? The

    asked by Molly on November 30, 2007
  10. physics

    small mass hangs at rest from a vertical rope of length that is fixed to the ceiling. A force then pushes on the mass, perpendicular to the taut rope at all times, until the rope is oriented at an angle and the mass has been raised by a vertical distance .

    asked by sophie on May 22, 2012
  11. Physics

    Even when the head is held erect, as in the figure below, its center of mass is not directly over the principal point of support (the atlant-ooccipital joint). The muscles at the back of the neck should therefore exert a force to keep the head erect. That

    asked by Emily on February 26, 2016
  12. Physics

    A 190-kg merry-go-round in the shape of a uniform, solid, horizontal disk of radius 1.50 m is set in motion by wrapping a rope about the rim of the disk and pulling on the rope. What constant force would have to be exerted on the rope to bring the

    asked by Ashley on November 1, 2012
  13. Magnets-Physics

    I have a few questions that I am not too sure of. why is it inadvisable to make a horseshoe magnet from a flexible material? -is it because it would have enough magnetism Do the poles of a horseshoe magnet attact each other? If you bend the magnet so that

    asked by Soly on November 6, 2007
  14. physics

    A mass is pushed over a surface by a 19 N force that acts somewhat downward at an angle of θ = 45° to the horizontal as shown in the figure below. The mass is 3.0 kg and the coefficient of friction between the mass and surface is 0.25. (a)What is the

    asked by Anonymous on October 25, 2015
  15. physics

    a block moves up 45degree incline w/ constant speed under the action of a force of 15n applied parallel to the incline.If the coefficient of kinetic friction is 0.3, determine the weight of the block and minimum force required to allow the block to move

    asked by kmae on March 6, 2014
  16. physics

    Ten , one rupees coin are put on the top at of each other on a table. Each coin has a mass 'm'. Give the magnitude and direction of - (1)- The force of 7th coin (counted from bottom) due to all coins on its top. (2)- The force of 7th coin by 8th coin. (3)-

    asked by me on October 14, 2014
  17. physics

    A horizontal force of 804 N is needed to drag a crate across a horizontal floor with a constant speed. You drag the crate using a rope held at an angle of 32° (from the horizontal). (a) What force do you exert on the rope? 1 N (b) How much work do you do

    asked by Anonymous on December 12, 2011
  18. physics

    A 29 kg chair initially at rest on a horizontal floor requires a 375 N horizontal force to set it in motion. Once the chair is in motion, a 345 N horizontal force keeps it moving at a constant velocity. The acceleration of gravity is 9.81 m/s2 . a) What is

    asked by hope on November 17, 2011
  19. Physics

    a 96 kg clock initially at rest on a horizontal floor requires a 605 N horizontal force to set it in motion. After the clock is in motion a horizontal force of 547 N keeps it moving with a constant velocity. the acceleration of gravity is 9.81 m/s2 find

    asked by Susan on October 11, 2012
  20. physics

    A 23 kg chair initially at rest on a horizontal floor requires a 371 N horizontal force to set it in motion. Once the chair is in motion, a 345 N horizontal force keeps it moving at a constant velocity. The acceleration of gravity is 9.81 m/s 2 . a) What

    asked by Anonymous on December 19, 2012
  21. physics

    A 23 kg chair initially at rest on a horizontal floor requires a 370 N horizontal force to set it in motion. Once the chair is in motion, a 332 N horizontal force keeps it moving at a constant velocity. The acceleration of gravity is 9.81 m/s 2 . a) What

    asked by Anonymous on October 17, 2012
  22. Physics

    A 1300 kg El Camino is parked on a 20 degree hill.(20 degrees above x axis)The driver of the El Camino returns, starts the car, and accelerates up the hill at 2 m/s^2. Find Sigma-Fx and Sigma-Fy. What is the normal Force acting on the car, and what is the

    asked by Jose Luis on October 12, 2015
  23. physics

    A 1.20 block is attached to a spring with spring constant 14.0 . While the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 50.0 . What is The block's speed at the point where = 0.350 A?

    asked by Anonymous on September 21, 2010
  24. eep

    9. A toy is thrown vertically downwards from the top of a building and has an initial velocity of 1.5 m/s. If the height of the building is 25 m, determine i. the velocity with which the toy hits the ground ii. the time taken for the toy to fall

    asked by anshuman kumar on December 20, 2012
  25. Physics

    A stone is thrown downward with a speed of 12 m/s from a height of 20 m. (acceleration due to gravity: 9.81 m/s2) a) What is the speed (in m/s) of the stone just before it hits the ground? b) How long does it take (in seconds) for the stone to hit the

    asked by Adub on October 21, 2014
  26. Physics

    A 1100 kg safe is 2.0 m above a heavy-duty spring when the rope holding the safe breaks. The safe hits the spring and compresses it 40 cm. What is the spring constant of the spring? I don't understand what to do here

    asked by tom on April 10, 2016
  27. physics

    A 1.20 block is attached to a spring with spring constant 14.0 . While the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 50.0 . What is The block's speed at the point where = 0.350 A?

    asked by Anonymous on September 21, 2010
  28. physics

    A rocket is launched straight up with constant acceleration. Four seconds after liftoff, a bolt falls off the side of the rocket. The bolt hits the ground 6.10s later. What was the rocket's acceleration?

    asked by Jeff on September 6, 2008
  29. physics

    In a certain particle, a current of 0.50 mA is carried by a 5.0MeV proton beam that has a radius of 1.5 mm. Find the density of protons in the beam.if the beam hits a target, how many protons hit the target in 1.0s.

    asked by grace on September 11, 2014
  30. physics- please !

    A 3.0kg- block sits on top of a 5.0kg block which is on a horizontal surface. The 5.0-kg block is pulled to the right with a force as shown in the figure . The coefficient of static friction between all surfaces is 0.65 and the kinetic coefficient is 0.42.

    asked by jeni on May 8, 2012
  31. science

    A sled is tied to a tree on a frictionless snow covered hill,as shown.If the sled weighs 77N ,1)Find the magnitude of the tension force T exerted by the rope on the sled .2)Find the magnitude of the normal force applied by the hill on the sled.MY WORK IS

    asked by ZENANDE on May 5, 2016
  32. Physics/Calculus

    It takes a force of 21,714lb to compress a coil spring assembly on a New York City Transit Authority subway car from its height of 8in to its fully compressed height of 5in. A. What is the assemblys force constant? B. How much work does it take to compress

    asked by Tim on May 2, 2014
  33. physics- please !

    A 3.0kg- block sits on top of a 5.0kg block which is on a horizontal surface. The 5.0-kg block is pulled to the right with a force as shown in the figure . The coefficient of static friction between all surfaces is 0.65 and the kinetic coefficient is 0.42.

    asked by jeni on May 8, 2012
  34. Physics Help Please

    A solenoid 20 cm long is constructed from 500 loops of wire and carries a current of 5 A as seen the diagram below. A tiny hole is drilled through the diameter of the solenoid in such a way that the current through the solenoid is not disrupted. If an

    asked by help please! on April 1, 2015
  35. Physical science

    1) how does the electric force between two oposite charges changes when the distance between the charges is tripled? 2)how does the electric force between two oposite charges changes when the amount of one charge is doubled?

    asked by Melissa on April 4, 2014
  36. physics

    A spring that is .7m in length elongates to 1.06 m when a 20 newton force is exerted to stretch the spring. By how much more does the spring stretch when an additional 8 newtons of force is exerted on it?

    asked by Christina on November 12, 2010
  37. physics

    A man pulls a wagon with a handle that is at an angle of 42° with the ground. If the man pulls with 330 N of force, how much force pulls the wagon forward?

    asked by Jamal on November 28, 2014
  38. 8th science

    An object that weighs 3N displaces 280 mL of water which weighs 2.8 N. What is the buoyant force on the object? Please help, idk how to find the buoyant force of an object thanks:D

    asked by brianna on February 18, 2009
  39. physics

    (a) A car with a mass of 950 kg is moving to the right with a constant speed of 1.45 m/s. What is the total force on the car? (b) What is the total force on the car if it is moving to the left?

    asked by Anon on February 21, 2014
  40. physics

    the centers of two 5000 kg blocks are separated by 1.13 m. What is the gravitational force between the two blocks? What must be the distance between the centers of the blocks if the gravitational force decreases 25 times?

    asked by mack on November 19, 2011
  41. Physics

    1-A car is lifted a certain distance in a service station and therefore has potential energy with respect to the floor. If it were lifted twice as high, how much potential energy would it have? Answer: twice as much 2-Two cars, one twice as heavy as the

    asked by Emily on December 9, 2009
  42. algebra 1

    this promblem will prepare you for the real world connection. the air around u puts pressure on ur body equal 14.7 pounds per square inch (psi). when you are underwater, the water exerts additional pressure on ur body. for each foot u r below the surface

    asked by alanaR. on August 26, 2010
  43. physical science

    a player uses a hockey stick to increase the speed of a 0.200 kg hockey puck by 6 m/s in 2 seconds. how much force was exerted on the puck? how much force did the puck exert on the hockey stick?

    asked by lisa on February 6, 2008
  44. Physics

    A 32 kg child puts a 15 kg box into a 12 kg wagon. The child then pulls horizontally on the wagon with a force of 65 N. if the box does not move relative to the wagon, what is the static friction force on the box?

    asked by T on January 16, 2012
  45. PHYSICS 111

    A 37.5-kg child swings in a swing supported by two chains, each 3.05 m long. The tension in each chain at the lowest point is 433 N. the force of the seat on the child is 498.5 N. b)Find the force exerted by the seat on the child at the lowest point.

    asked by lily on March 11, 2012
  46. Physics

    A 23.0 kg block is initially at rest on a horizontal surface. A horizontal force of 80.0 N is required to set the block in motion. After it is in motion, a horizontal force of 57.0 N is required to keep the block moving with constant speed. Find the

    asked by Maria on November 2, 2010
  47. physics

    Three forces are applied to the ring of a force table,60N at an angle of 10.0 degrees, 40N at an angle of 70.0 degrees, and 50N at an angle of 100.0 degrees. Find the magnitude of the resultant and the direction by using the analytical method. What is the

    asked by ramona on December 10, 2012
  48. Physics 111 PLEASE HELP ASAP

    A 37.5-kg child swings in a swing supported by two chains, each 3.05 m long. The tension in each chain at the lowest point is 433 N. the force of the seat on the child is 498.5 N. b)Find the force exerted by the seat on the child at the lowest point.

    asked by lily on March 12, 2012
  49. Physics

    Assume that the three blocks in Figure P4.27 move on a frictionless surface and that a F = 46 N force acts as shown on the m = 2.5 kg block. Figure P4.27. (a) Determine the acceleration given this system. m/s2 (to the right) (b) Determine the tension in

    asked by Avery on February 23, 2012
  50. biomechanics

    A Softball is Thrown at an angle of 45 degrees with the horizontal. It leaves the hand 2m above the ground. Its Initial Velocity is 20 m/s . Neglecting all external resistance, how far would it travel ? The point at which it hits the ground is at the same

    asked by yaya on March 18, 2013
  51. Physics

    A bullet of mass 5 g with velocity 1000m/s hits a wooden block of 1.5kg at rest. If the bullet penetrates through the block with a velocity of 400m/s, calculate the maximum height in which the block is lifted from its initial position.

    asked by Thiynes on July 14, 2014
  52. Physics

    PLEASE ANSWER ASAP!!!!!!!!!! step by step a) find the acceleration experienced by the driver of a car traveling at 50km/h if the car hits a pole and crumples 50cm. b) repeat part a) for a car traveling 100km/h

    asked by ice on July 25, 2012
  53. physics

    A Softball is Thrown at an angle of 45 degrees with the horizontal. It leaves the hand 2m above the ground. Its Initial Velocity is 20 m/s . Neglecting all external resistance, how far would it travel ? The point at which it hits the ground is at the same

    asked by yaya on March 18, 2013
  54. physics

    Part C Piles of snow on slippery roofs can become dangerous projectiles as they melt. Consider a chunk of snow at the ridge of a roof with a pitch of 21 degrees. If the edge of the roof is 11.0 above ground, what is the speed of the snow when it hits the

    asked by Anne on October 15, 2010
  55. PHYSICS !!

    A 45.0g bullet is fired on a 2.0kg wooden block which is resting on a horizontal surface with a coefficient friction of 0.4 . If the speed of the bullet is 165m/s when it hits the block. Determine the maximum horizontal distance of the block will reach

    asked by gie on February 26, 2014
  56. Physics

    PLEASE ANSWER ASAP!!!!!!!!!! step by step a) find the acceleration experienced by the driver of a car traveling at 50km/h if the car hits a pole and crumples 50cm. b) repeat part a) for a car traveling 100km/h

    asked by ice on July 25, 2012
  57. physics

    A rifle is aimed horizontally at a target 50 m away. The bullet hits the target 2.4 cm below the aim point. Part A What was the bullet's flight time? Neglect the air resistance Part B What was the bullet's speed as it left the barrel?

    asked by raquel on September 30, 2015
  58. Government

    1. Which of the following exerts the most influence over the policies and actions of Japan's House of Representatives? A. The Japan Socialist Party B. The Liberal Democratic Party C. The Supreme Court D. the bureaucracy I'm stuck between b and d? 2. Japan

    asked by Ant on July 14, 2011
  59. 11th grade

    A person, who weighs 688N, swings from a cliff at the end of a convenient vine that is 18m long. From the top of the cliff to the bottom of the swing he descends by 3.2m. The vine will break if the force on it exceeds 950N. a) Does the vine break? b) If

    asked by Anonymous on February 10, 2009
  60. Physics

    In the figure below, a spider is resting after starting to spin its web. The gravitational force on the spider is 0.167 N on the junction of the three strands of silk. The junction is supported by different tension forces in the two strands above it so

    asked by Nathan on September 5, 2012
  61. Chemistry

    Shown below are several options for the box notations of the ground state electron configuration of the following gas-phase species. Identify the correct electronic configuration. i. Al2− ii. Mn (a)Select the reason that best explains why the first

    asked by c on January 11, 2013
  62. physics

    You pick up a board of length 2.60 m and mass 13.00 kg. To do this, you exert a force upward with your left hand a distance LL=0.754 m from the left end of the board and you need to exert a force with your right hand a distance LR=0.264 m from the left end

    asked by Anonymous on February 6, 2012
  63. physics

    You pick up a board of length 2.60 m and mass 13.00 kg. To do this, you exert a force upward with your left hand a distance LL=0.754 m from the left end of the board and you need to exert a force with your right hand a distance LR=0.264 m from the left end

    asked by Anonymous on February 6, 2012
  64. physics

    You pick up a board of length 2.60 m and mass 13.00 kg. To do this, you exert a force upward with your left hand a distance LL=0.754 m from the left end of the board and you need to exert a force with your right hand a distance LR=0.264 m from the left end

    asked by Anonymous on February 6, 2012
  65. Physics

    You pick up a board of length 2.60 m and mass 13.00 kg. To do this, you exert a force upward with your left hand a distance LL=0.754 m from the left end of the board and you need to exert a force with your right hand a distance LR=0.264 m from the left end

    asked by Anonymous on February 6, 2012
  66. physics

    You pick up a board of length 2.60 m and mass 13.00 kg. To do this, you exert a force upward with your left hand a distance LL=0.754 m from the left end of the board and you need to exert a force with your right hand a distance LR=0.264 m from the left end

    asked by Dan on February 6, 2012
  67. financial mathematics

    Qn 1. The easy loan company has a finance charge of 0.089% per day on out standing balances.What is the effective rate? Qn 2. Seven days after Jay's company borrowed R10,000,000 interest to the amount of R37,876,71 had to be paid. The simple interest rate

    asked by rita on March 1, 2007
  68. Physics

    A freestyle skier hits the take off ramp with an initial velocity of 17.5 m/s with a purely vertical take off (90 degrees). What is the peak height that the skier will reach? Can you fully explain to me how to get this answer? I did the formula

    asked by Caitlyn on February 27, 2013
  69. Physics problem

    An object with a mass of 100kg is dropped from an 80 meter high building and leaves an impression in the ground of 15cm. A.What is the time needed to hit the ground? B. What is the speed of the object when it hits the ground? C. What is the coefficient of

    asked by Sarah on November 1, 2013
  70. Physics problem

    An object with a mass of 100kg is dropped from an 80 meter high building and leaves an impression in the ground of 15cm. A.What is the time needed to hit the ground? B. What is the speed of the object when it hits the ground? C. What is the coefficient of

    asked by Sarah on November 1, 2013
  71. physics

    If an object is thrown in an upward direction from the top of a building 160 ft. high at an initial speed of 21.82 mi/h., what is its final speed when it hits the ground?(Disregard wind resistance. Round answer according to significant figures and do not

    asked by Anonymous on January 1, 2013
  72. Lang Arts

    The word condemnation best describes which situation from The Pigman & Me? Select all that apply (there are 2 answers). A. Paul hits John with the paddle B. Nonno Frankie gives Paul advice C. Paul shows up to the fight D. Paul's sister attacks Moose My

    asked by Boba Fett on October 30, 2017
  73. Physics

    A projectile is launched with an initial speed of 80.0m/s at an angle of 40 degrees above the horizontal. The projectile lands on a hillside 3.80s later. Neglect air friction. What is the projectile's velocity at the highest point of its trajectory? What

    asked by Priya on September 15, 2014
  74. physics

    A cannon is mounted on a tower above a wide, level field. The barrel of the cannon is 20 m above the ground below. A cannonball is fired horizontally with an initial speed of 900 m/s. Assuming air resistance can be neglected, approximately how long will

    asked by jordan on September 9, 2015
  75. Physics

    A robot probe drops a camera off of the rim of a 239 m high cliff on Mars, where the free-fall acceleration is -3.7 m/s^2. A. Find the time required for the camera to reach the ground. B. Find the velocity with which it hits the ground.( shown work will be

    asked by Maggie on August 21, 2016
  76. Dynamics

    The propellers of a ship of weight W can produce a propulsive force F0; they produce a force of the same magnitude but of opposite direction when the engines are reversed. Knowing that the ship was proceeding forward at its maximum speed v0 when the

    asked by Dynamics Problems on July 19, 2014
  77. Physics

    For the normal force exerted on the book by the wedge in the diagram, which force(s) complete(s) the force pair for Newton’s third law (action-reaction)? 1) the sum of the component of gravity perpendicular to the surface of the incline and the component

    asked by kurtis on March 19, 2015
  78. Science (Balanced/Unbalanced Forces)

    "Toy Car A" is propelled by elastic force. The other forces acting on the car are gravity (pulling the car down) and friction force (between the car and the floor). What UNBALANCED forces are acting on the car? "Toy Car B" is propelled by air resistance.

    asked by Alexandra on December 19, 2013
  79. Science (Help, please!)

    "Toy Car A" is propelled by elastic force. The other forces acting on the car are gravity (pulling the car down) and friction force (between the car and the floor). What UNBALANCED forces are acting on the car? "Toy Car B" is propelled by air resistance.

    asked by Alexandra on December 19, 2013
  80. math

    Sandy dropped a basketball from the top of her Mom'soffice building which is 72 meters tall. She discovered that the first bounce bounced 36m on the second bouce the ball bounced 18 meters. if this pattern continues, how high will the ball bounce on the

    asked by Preston on January 24, 2007
  81. Physics

    A(n) 94 kg clock initially at rest on a horizontal floor requires a(n) 697 N horizontal force to set it in motion. After the clock is in motion, a horizontal force of 530 N keeps it moving with a constant velocity. The acceleration of gravity is 9.81 m/s2

    asked by Ovidio on October 19, 2017
  82. Physical Science

    An elephant drags a tree trunk along a rough horizontal surface by means of an attached rope which makes an angle of 30° with the horizontal. The force in the rope is 4 000N. CALCULATE the horizontal component of the force exerted by the rope on the tree

    asked by Angie on February 14, 2017
  83. physics

    A 20kg block is initially at rest on a rough, horizontal surface. A horizontal force of 75N is required to set the block in motion. After it is in motion, a horizontal force of 60N is required to keep the block moving with constant speed. Find the

    asked by kmae on March 6, 2014
  84. physics 2, help please

    Two masses (mA= 2 kg, mB= 4 kg) are attached to a (massless) meter stick, at the 0 and 75 cm marks, respectively. c.) Now, if mass B was removed, how much force would need to be exerted at the 100 cm mark in order to keep the meter stick level*? ? N d.)

    asked by kelsey on October 23, 2008
  85. Algebra

    While traveling in a car, the centrifugal force a passenger experiences as the car drives in a circle varies jointly as the mass of the passenger and the square of the speed of the car. If the a passenger experiences a force of 100.8 newtons when the car

    asked by Anonymous on March 16, 2010
  86. chemistry

    "Newton's law tells us that Force= Mass x Acceleration. We also know that Energy = Force x Distance and Pressure= Force/Area. Using these relationships and table I-1 [I'll type it out], derive (do math stuff) the dimensions of newtons, joules, and pascals

    asked by Jenn on September 13, 2006
  87. Science PHYSICS

    SO desperate with help with this. What is the magnitude of the acceleration that this force will cause when applied to a car with a mass of 1.1x10³Kg Then calculate the final speed of the car (above) assuming that it was standing still initially and that

    asked by Alice on March 24, 2010
  88. physics

    1. Two point charges are separated by 6 cm. The attractive force between them is 14 N. Find the force between them when they are separated by 12 cm. 2. The SI unit of mass is the kilogram. What is the SI unit of charge? 3. The proportionality constant k in

    asked by Nicole on July 14, 2010
  89. Physics

    Three people pull horizontally on ropes attached to a post, as shown in the figure.(Figure 1) The total force that they exert on the post is zero. One of them pulls directly north with F1 = 500 N . Another pulls with F2 = 400 N in a direction 60.0∘ west

    asked by Nerdy on July 13, 2015
  90. Physics

    1. The water pressure in a kitchen faucet is 3.43 x 10^5 N/m^2. How high above the faucet is the surface of the water in the storage tank? 2. A swimming pool 8.0 m x 15.0 m has a uniform depth of 2.0 m. Determine the total force and the absolute pressure

    asked by Reborn on September 3, 2014
  91. physics

    Find the shear strain that results if a force of magnitude 9.00×105 is applied to the top square face of the plate, parallel to the side, and a force of equal magnitude is applied in the opposite direction to the bottom face of the plate as shown . Note

    asked by Linda on April 4, 2011
  92. Physics

    A ball is being twirled in a circle. If the string breaks and we IGNORE gravity, what path will the ball follow after the string breaks? 1. It will slow down and move in a straight line. 2. It will slow down and move in a circle. 3. It will speed up and

    asked by Cameron on October 3, 2018
  93. Physics 30

    A. Calculate the net force on q2? b. calculate the net force on q3? q1= +2.0 MC q2=+3.0 MC q3=+6.0 MC q1-----30cm-----q2-----------45cm----------q3

    asked by elaine on February 6, 2016
  94. Math Ratios

    Force of attraction between two spheres is 3.75 x 10?-5 dyne when the spheres are placed 18 cm apart. What is force of attraction when placed 52 cm apartÉ

    asked by Lynda on July 16, 2013
  95. physics

    What is the gravitational potential energy of a ball with a weight of 72 N when it is sitting on a shelf 1.4 m above the floor?

    asked by Sue on October 25, 2016
  96. physics

    Roger tosses a ball straight upward at v. Ignore air drag?

    asked by Denise on September 20, 2018
  97. Physics

    A rubber ball of mass 0.12kg is held at a height of 2.5m above the ground, and then released.

    asked by Onofiok on February 6, 2016
  98. Physics

    A 0.055 kg golf ball leaves the tee at 50 m/s. what is its change in momentum (impulse) ?

    asked by Taylor on January 16, 2013
  99. physics

    a small pith ball carries a charge of -1.3 uc. how many excess electrons does this represent?

    asked by ann on May 17, 2012
  100. physics

    which object will have higher inertia a rock of 20kg or a hollow ball of 22kg

    asked by alo on November 2, 2010