1. physics

    Physics: maximum force that can be applied to move an object? What is the maximum force F which can be exerted? Given: The friction between the block with mass 14 kg and the wedge with mass 16 kg is 0.19 . The surface between the wedge with mass 16 kg and

    asked by rachel on June 16, 2011
  2. Physics

    The maximum lift force on a bat is proportional to the square of its flying speed v. For the hoary bat (Lasiurus cinereus), the magnitude of the lift force is given by FL (0.020 N·s2/m2)v2 The bat can fly in a horizontal circle by "banking" its wings at

    asked by Ana on March 13, 2010
  3. psychology

    There are many social and cultural contexts you interact with that strongly influence development. These contexts include people you interact with daily, neighborhood factors, and larger scale social and cultural variables. In order to fully understand how

    asked by april on February 27, 2011
  4. Physics

    Ball is thrown horizontally off a cliff with an initial speed of 20m/s. a) how long does it take the ball to hit the ground 20m below. b)how long would it take to hit the ground if it was dropped from the cliff? c) how long would it take to hit the ground

    asked by Koby on September 20, 2010
  5. Physics

    A hot-air balloon has a total mass of 720 kg. It accelerates downwards (towards the ground) at 2.7m/s^2 even though an upwards lift force in acting on it. Find a:Find the lift force acting on the balloon B)What must be the total mass that needs to be

    asked by applebottom on October 30, 2010
  6. Physics

    A person is standing on the edge of a cliff of height h= 24 m. She throws a stone of mass m=0.2 kg vertically down with speed v0= 10 m/s (stone 1) and another stone of the same mass vertically up at the same speed (stone 2). The gravitational acceleration

    asked by Anon on October 6, 2013
  7. Physics

    a rocket following a parabolic path through the air suddenly explodes into many pieces. what can you say about the motion of this system. and If only an external force can change the momentum of the center of mass of an object, how can the internal force

    asked by Steve on December 6, 2008
  8. physics

    You exert a force of a known magnitude F on a grocery cart of total mass m. The force you exert on the cart points at an angle θ below the horizontal. If the cart starts at rest, determine an expression for the speed of the cart after it travels a

    asked by Anonymous on October 15, 2014
  9. Pre-calculus

    Nathaniel pulls a sled along level ground with a force of 30 newtons on the rope attached to the sled. If the rope makes an angle of 20 degrees with the ground when it is pulled taught, find the horizontal and vertical components of the force. Round to the

    asked by Lucy on October 19, 2008
  10. Physics 1

    The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is W = 55600 N. The lift force generated by the rotating blade makes an angle of 21.0° with respect to the vertical. (a) What is the

    asked by Donald on October 29, 2012
  11. physics

    The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is W = 55600 N. The lift force generated by the rotating blade makes an angle of 21.0° with respect to the vertical. (a) What is the

    asked by Anonymous on October 25, 2012
  12. Physics

    An engine pulls a train of 20 frieght cars each having a mass of 5.0*10^4 kg with a constant force. The cars move from rest to a speed of 4.5 m/s in 19.7s on a straight track. Neglecting friction, the force with which the tenth car pulls the eleventh one

    asked by James on January 29, 2010
  13. physics

    i'm not very good at physics and i have an exam tomorrow!! for the first one do i use the formula F=-Kx to make the answer -4500 ? and for the second i really have no idea what formula to use what is the value for k if a spring stretches 0.4m when

    asked by sammi on October 15, 2008
  14. Physics

    The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is W=54300 N. The lift force L generated by the rotating blade makes an angle of 21.0° with respect to the vertical. (a) What is the

    asked by Tami on October 23, 2014
  15. AP Physics 1

    You exert a force of a known magnitude F on a grocery cart of total mass m. The force you exert on the cart points at an angle θ below the horizontal. If the cart starts at rest, determine an expression for the speed of the cart after it travels a

    asked by Max Pat on September 29, 2016
  16. physics

    A 59.1 kg ice skater, moving at 13.3 m/s, crashes into a stationary skater of equal mass. After the collision, the two skaters move as a unit at 6.65 m/s. Suppose the average force a skater experience without breaking a bone is 4656 N. If the impact time

    asked by Anonymous on March 23, 2012
  17. physics

    A 59.1 kg ice skater, moving at 13.3 m/s, crashes into a stationary skater of equal mass. After the collision, the two skaters move as a unit at 6.65 m/s. Suppose the average force a skater experience without breaking a bone is 4656 N. If the impact time

    asked by Anonymous on March 23, 2012
  18. Physics

    Three uniform spheres of masses m1 = 3.50 kg, m2 = 4.00 kg, and m3 = 6.50 kg are placed at the corners of a right triangle (see figure below). Calculate the resultant gravitational force on the object of mass m2, assuming the spheres are isolated from the

    asked by Josie on June 20, 2013
  19. Physics

    The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is W=59900 N. The lift force L generated by the rotating blade makes an angle of 21.0° with respect to the vertical. (a) What is the

    asked by StressedStudent on September 22, 2012
  20. physics

    The helicopter in the drawing is moving horizontally to the right at a constant velocity. The weight of the helicopter is W=41600 N. The lift force L generated by the rotating blade makes an angle of 21.0° with respect to the vertical. (a) What is the

    asked by iamstupid on September 30, 2014
  21. science

    Calculate the work done in each of the following situations. (a) A horse pulls a wagon with a force of 1200 N and moves it 15 m. (b) A cable lifts an elevator 16 m by using a cable with a tension force of 2500 N. -How much work is required to lift a 35-kg

    asked by james on January 18, 2017
  22. Science

    1.A lift weighting 1000kg is moving upwards with an acceleration of 1m/s^2.The tension in the supporting cable is (a)980N (b)10800N (c)9800N (d)8800N 2.A person of mass 60kg is inside a lift of mass 940kg and presses the button on control panel.The starts

    asked by Diwije on July 30, 2015
  23. crt-205

    can someone help to indentify fallacies and rhetorical devices in this article? The government's 2008 banking bailout is a fraud perpetrated on the American people. The government has abandoned sound money practices in favor of allowing the Federal

    asked by joe on October 30, 2010
  24. Physics

    this one is kind of hard A bicyclist can coast down a 7.0 degree hill at a steady 9.5 h^-1 km. If the drag force is proportional to the square fo the speed v, so that Fd = cv^2, calculate (a) the value fo the constant c and (b) the average force that must

    asked by QUESTION on August 20, 2009
  25. Physics

    Sorry for posting so many, but I just need to make sure I'm on the right track. Just need someone to check my working and answers. A rocket has a mass 3000kg. The fuel used in the rocket has an additonal mass of 500kg. At the launch, the rocket accelerates

    asked by JC on November 6, 2008
  26. Physics

    You drive 109 km/h east for 31 min , then 82 km/h north for 42 min . Let the +x-axis point east and the +y-axis north. A)Find your average velocity for the entire trip. B)Find your average speed for the entire trip. You should probably do part b first.

    asked by Anonymous on January 29, 2017
  27. Physics

    A hockey player hits a puck with his stick, giving the puck an initial speed of 5.8m/s . Part A If the puck slows uniformly and comes to rest in a distance of 20m , what is the coefficient of kinetic friction between the ice and the puck?

    asked by Joe on October 3, 2013
  28. PHYSICS

    If a boy(500N) wishes to slide down a rope that has a breaking stand of 350N, then: (a) with what acceleration must it move downward in order to not break the rope. (b) if he slide 30m, how long will it take? (c) how fast will he be going before he hits

    asked by Josie on November 30, 2013
  29. Health

    after neglecting to look before diving into the pool, your friend hits his head on a rock and disrupts his __________ causing him to be paralyzed from his waist down A. cardiovascular system*** B. circulatory system C. nervous system D. endocrine system

    asked by Ann on February 19, 2015
  30. Calculus

    A rocket follows a path given by y=x-1/91x^3 where distances are in miles. If the horizontal velocity is given by vx=1.4x, find the direction of the velocity when the rocket hits the ground (assume level terrain) if time is in minutes. So far I've only

    asked by Mike on April 16, 2018
  31. astronomy

    2. We ultimately want to find the amount of solar energy that hits the observer on the planet. Energy is usually measured in Joules, but there are other appropriate units of energy as well; kilowatt-hours for example, are used to measure the amount of

    asked by Luis on July 15, 2012
  32. physics

    A crate sits on wooden horizontal surface (a wooden floor). The figure shows a top view of this looking down onto the crate (gravity would be acting into the page). Man one and man two apply forces F1 and F2, at angles of θ1 and θ2 respectively, with the

    asked by emily on June 3, 2015
  33. Physics

    Emma is working in a shoe test lab measuring the coefficient of friction for tennis shoes on a variety of surfaces. The shoes are pushed against the surface with a force of 400 N, and a sample of the surface material is then pulled out from under the shoe

    asked by BT on July 30, 2016
  34. math

    A pair of blocks of the mass M =30.7 kg, and 2 M are dragged over a rough, horizontal surface by two constant forces of magnitude F=98.0 N. The angle α = 22.7 ° . The blocks are displaced 7.5 m, and the coefficient of kinetic friction is 0.258. *for the

    asked by Haley on October 15, 2014
  35. Physics

    A pair of blocks of the mass M =30.7 kg, and 2 M are dragged over a rough, horizontal surface by two constant forces of magnitude F=98.0 N. The angle α = 22.7 ° . The blocks are displaced 7.5 m, and the coefficient of kinetic friction is 0.258. *for the

    asked by Haley on October 15, 2014
  36. Physics

    A child on a sled is sliding at a speed of 4m/s across level ice. if the total mass of the sled + child is 50kg and the sled has steel runners, how long will it take the sled to come to a halt? what force will be required to start it moving again? If this

    asked by Roisin on December 15, 2015
  37. physical

    What is the traverling ball in Hanbball

    asked by Anonymous on October 9, 2011
  38. d a v

    a ball weight of 0.4kg

    asked by aryan on October 8, 2015
  39. science

    what is the velocity of a 0.7 kg ball that has a momentum of 1.4 kg m/s

    asked by kc on January 30, 2016
  40. physics

    Two balls having different masses reach the same height when shot into the air from the ground. If there is no air drag, which of the following statements must be true? (More than one statement may be true.) A. Both balls left the ground with the same

    asked by andrea on February 22, 2011
  41. physical science

    a force of 20 N gives an object an acceleration of 5 m/s2. (a)What force would be needed to give the same object an acceleration of 1 m/s2. (b) what force would be needed to give an accelerattion of 10 m/s2 ?

    asked by tracey on September 14, 2012
  42. physics

    A 5 000-N weight is held suspended in equilibrium by two cables. Cable 1 applies a horizontal force to the right of the object and has a tension, T1. Cable 2 applies a force upward and to the left at an angle of 37.0° to the negative x axis and has a

    asked by Susan on September 18, 2011
  43. physics

    a bottle is given a push along a frictionless tabletop and slides off the edge of the table (a) what forced are exerted on the bottle while (i) it is being pushed (ii) on the table free of push(iii)falling from the table to the floor. (b) what is the

    asked by sam on October 6, 2009
  44. Mechanics & hydromechanics

    Three forces pulling on a body are in equilibrium. The direction of one is due south, the direction of another is 80 degrees east of north, and the third force acts in the direction of 35 degrees west of north. If the magnitude of southerly force is 38 N,

    asked by joe on January 16, 2013
  45. physics

    a 2390 kg car traveling to the west at 22.4 m/s slows down uniformly under a force of 8740 N to the east. (a) How much force would be required to cause the same acceleration on a car of mass 3140 kg? Answer in units N (b) How far would the car move before

    asked by Bob on February 9, 2009
  46. physics

    Which of the following statements about a system in resonance is true A.The energy of the system is always increasing. B.The greater the damping the larger the amplitude of the oscillations C.The driving force is always in the direction of the velocity.

    asked by Paige on April 16, 2014
  47. Physics

    a sled mass 50 kg is pulled along snow-covered, flat group. the static friction coefficent is 0.30, and the sliding friction coefficient is .10. what force is need to get the sled moving? then, what force is needed to keep the sled moving at a constant

    asked by Alex on November 28, 2010
  48. Physics

    A dock worker applies a constant horizontal force of 80.0N to a block of ice on a smooth horizontal floor. The frictional force is negligible. The block starts from rest and moves 10.0m in the first 6.00s. What is the mass of the block of ice?

    asked by Shelby on October 2, 2013
  49. Electricity

    1) consider two charges q1 =3 uc and q2=-2 uc, a) state whether the electric force between these charges is attractive ore repulsive b) what happens to the electric force if the distance between the charges is double (multiplied by two). 2) if the current

    asked by anonymous on April 13, 2019
  50. physics

    THe steering wheel of a car has a diameter of 60cm and turns a shaft 4cm in diameter (a) If a 90nt force is needed to turn the wheel, what torque is exerted on the wheel? (b) What force is applied tangentially to the surface of the shaft?

    asked by bird on January 19, 2011
  51. Static Friction..I really Have no Idea

    A 0.40 kg block rests on a desk. The coefficient of static friction is 0.20. You push the side of the block but do not have a spring scale to measure the force you use. The block does not move. Which statement is true about the force of static friction? It

    asked by Sam on December 21, 2014
  52. Physics

    A dock worker applies a constant horizontal force of 80.0N to a block of ice on a smooth horizontal floor. The frictional force is negligible. the block starts from rest and moves 11.0 m in the first 5.00s what is the mass of the block of ice?

    asked by Sarah on June 10, 2009
  53. Physics

    An object falling under the pull of gravity is acted upon by a frictional force of air resistance. The magnitude of this force is approximately proportional to the speed of the object, which can be written as f = bv. Assume b = 19 kg/s and m = 59 kg. What

    asked by Jenny on September 22, 2008
  54. Physics

    a bottle is given a push along a frictionless tabletop and slides off the edge of the table (a) what forced are exerted on the bottle while (i) it is being pushed (ii) on the table free of push(iii)falling from the table to the floor. (b) what is the

    asked by Nick on October 6, 2009
  55. PHY 131

    three forces act on a moving force object. one cforce has a magnitude of 80.O N and is directed due north. another has a magnitude of 60.0N and is due west. What must the magnitude and direction of the 3rd force, such that the object continues to move at a

    asked by S.Strange on March 23, 2010
  56. physics

    A 2.0 kg particle is moving along the x axis to the left with a velocity of v= -6.0 m/s. Suddenly, between times t =0 and t = 4.0 x a net force = 3t^2 – 12t is applied to the particle, where F is in N and t is in s. Calculate the velocity of the particle

    asked by julia on November 23, 2009
  57. physics

    ( 1.) A passenger in a moving car and a passerby standing at the road side see each other as moving in the opposite direction. Which of the following is not true?< (A) The passenger is in motion relative to the passer-by (B) The passer-by is stationery

    asked by lawrence on October 12, 2011
  58. Physics

    An electric motor is rated to have a maximum power output of 0.72 hp. If this motor is being used to lift a crate of mass 188 kg, how fast (i.e., at what speed) can it lift the crate? Hint: Assume the only other force on the crate is the force of gravity.

    asked by Alex on May 28, 2012
  59. physics

    while moving out of her dorm room bridget carries a 12kg box to her car, holding in both arms. how much force must be exertrd by each of her arms to supprt the box b) how will this force change if bridget holds the box with only one arm.?

    asked by confuseedd and do not like physics on October 11, 2007
  60. physics

    two dogs play tug of war with a rope toy that has a mass of 0.50 kg. if one dog pulls on the toy with a force of 140.0 N, and the other dog pulls in the opposite direction with a force of 138.0 N, what is the horizontal acceleration of the toy?

    asked by kristi on November 30, 2011
  61. physics

    An 8.0 kg bag of coin is being pulled upward by a rope rises 20.0 cm in 0.50 sec, starting from rest. Assuming the acceleration is constant, calculate the net force on the bag. what is the upward force on the bag exerted by the rope?

    asked by lalaglaze on October 11, 2009
  62. physics

    A mass of 300 g is attached to a string that is 1.21 m in length. The mass is whirled in a horizontal circle on a surface and completes 7.00 rotations in a time of 2.71 s. The force of tension in the string is 92.7 N. Determine the force of friction

    asked by myra on April 25, 2012
  63. physics

    A force is applied to an initially stationary block of mass 1.75 kg that sits on a horizontal floor as shown. The 53.5 N force is applied at θ = 32° angle. The coefficients of friction between the floor and the block are μs = 0.593 and μk = 0.343. What

    asked by Anonymous on October 7, 2014
  64. physics

    In a thundercloud there may be an electric charge of 46 C near the top of the cloud and −46 C near the bottom of the cloud. If these charges are separated by about 6 km, what is the magnitude of the electric force between these two sets of charges? The

    asked by sally on January 28, 2016
  65. Science (Physics)

    A conductor carries a current of 25 A and is at right angles to a magnetic field. The flux density is 0.8 Tesla and the length of the conductor in the field is 35 cm. Calculate the force acting on the conductor, and the value of the force if the conductor

    asked by Eren A on June 4, 2015
  66. physics

    a hydraulic lift is designed for a gain of 100, so that a 10 N force applied at theinput piston will produce a force of 1,000 N at the output piston. If the radius of the input piston is 2 cm, the radius of the output is a) 200 cm, b) .02 cm c) 400 d) 20

    asked by anna on January 8, 2012
  67. Science(Magnets)

    Should be easy, this. The two south pole ends of two magnets are touching. Which of the following can be concluded? A. No work was required by an outside force. B. The magnets are naturally attracted to each other. C. Work was required by an outside force.

    asked by dddd47906 on September 20, 2014
  68. Physics (Mathmate)

    When a force is applied to an object with mass equal to the standard kilogram, the acceleration of the mass is 3.25 m/s2. When the same magnitude force is applied to another object, the acceleration is 2.75 m/s2. What is the mass of the object? What would

    asked by Sarah on June 15, 2010
  69. physics

    When a force is applied to an object with mass equal to the standard kilogram, the acceleration of the mass is 3.25 m/s2. When the same magnitude force is applied to another object, the acceleration is 2. 75 m/s2. What is the mass of the object? What would

    asked by Sarah on June 14, 2010
  70. math

    Baseball Nick throws a baseball upward with an initial velocity of 60 feet per second. What is the maximum height of the ball after Nick releases the ball? Formula for the problem - h(t)=v0t-16t^2, h(t)= the height of an object in feet, v0=an object's

    asked by Angel on April 14, 2007
  71. physics

    Hi i'm doing that lab were you attach a weight to a tape which is also through a timer that puts marks on the tape at a given time interval ok I'm asked why is gravity different than on Earth? I don't rember the physics answer behind it I remeber Fg =

    asked by physics on August 13, 2009
  72. College Physics

    A box with a mass of 3.5 kg is resting on a horizontal frictionless incline plane which is inclined at 28 degrees. Another force is applied at an angle of 13 degrees above the direction parallel to the incline. What does the magnitude of this force need to

    asked by Suzy on October 1, 2014
  73. physics

    A Hot Wheels car of mass 0.081 kg starts at a height of 1.42 m and goes through a loop with a height of 0.38 m with a radius of 0.16 m along a track of length 3.02 m. The car barely makes it through the loop. Since, Work = Force x distance, what is the

    asked by Frankie on November 10, 2014
  74. physics

    A constant net force of 390 N is applied upward to a stone that weighs 31 N. The upward force is applied through a distance of 2.0 m, and the stone is then released. To what height, from the point of release, will the stone rise? Assume that air resistance

    asked by Kay on January 10, 2011
  75. physics

    A crane is used to hoist a 500kg crate vertically at a constant velocity of 4 meters per second. Ignore the effects of friction. a) calculate the magnitude of the net force experienced by the crate b) calculate the magnitude of the force applied by the

    asked by sam on February 11, 2013
  76. Physics

    A 20 kg slab is to be pulled up a plane inclined 20 degrees with the horizontal at a constant speed by a force that is directed 15 degrees above the surface of the inclined plane. Determine the magnitude of the force necessary to perform the task. The

    asked by ylopez on July 4, 2016
  77. physics science

    a 750kg motor car is moving at a constant force of 27m/s on a staight horizontal road. The frictional force expirience by the motor car travelling on the road is 680N. Calculate the power delivered by the motoq car

    asked by mvelo on February 18, 2013
  78. Physics

    A 2340 kg car traveling to the west at 20.7 m/s slows down uniformly under a force of 8340 N to the east. a) How much force would be required to cause the same acceleration on a car of mass 3180 kg? Answer in units of N. b) How far would the car move

    asked by Anonymous on April 18, 2011
  79. Physics

    A rope is wound round a fixed cylinder of radius r so as to make n complete turns . Show that if one end of the rope is held by a force f, a force f e^2(pi)nu must be applied to the other end to produce slipping,where u is the coeff. of friction between

    asked by Ayat on March 14, 2014
  80. physics science

    a 750kg motor car is moving at a constant force of 27m/s on a staight horizontal road. The frictional force expirience by the motor car travelling on the road is 680N. Calculate the power delivered by the motoq car

    asked by mvelo on February 18, 2013
  81. College Physics

    The driver of a 1600 kg car, initially traveling at 10.6 m/s, applies the brakes, bringing the car to rest in a distance of 23.0 m. (a) Find the net work done on the car. (b) Find the magnitude and direction of the force that does this work. (Assume this

    asked by Suzy on October 10, 2011
  82. Dynamics

    Problem 13.185 A 9.13 kg sphere A of radius 90 mm moving with a velocity magnitude v(0)= 2 m/s strikes a 830 g sphere B of radius 40 mm which is hanging from an inextensible cord and is initially at rest. Sphere B swings to a maximum height h after impact.

    asked by Kate on September 22, 2011
  83. AP physics

    A 2.10x10^3 kg car starts from rest at the top of a 5.8 m long driveway that is sloped at 25° with the horizontal. If an average friction force of 4.0X10^3 N impedes the motion, find the speed of the car at the bottom of the driveway. im using the

    asked by RNH on November 10, 2010
  84. Physics

    A cylindrically shaped piece of collagen (a substance found in the body in connective tissue) is being stretched by a force that increases from 0 to 0.0436 N. The length and radius of the collagen are, respectively, 2.90 cm and 0.0815 cm, and Young's

    asked by BrookeNeed on November 28, 2016
  85. Chem II

    A sample of gas at 38 degrees Celsius occupies a volume of 2.97 L and exerts a pressure of 3.14 atm. The gas is heated to 118 degrees Celsius and the volume decreased to 1.04 L. Determine the new pressure exerted by the gas.

    asked by Layn on October 15, 2012
  86. Physics

    Your teenage kid finally gets his drivers license. He takes off in your brand new car that weighs 2000kg at 47m/s when he hits a parked semi that weighs 40000kg. They plow forward in a perfectly in elastic fashion in the same direction. What is the

    asked by Michelle on April 26, 2014
  87. Physics

    Your teenage kid finally gets his drivers license. He takes off in your brand new car that weighs 2000kg at 47m/s when he hits a parked semi that weighs 40000kg. They plow forward in a perfectly in elastic fashion in the same direction. What is the

    asked by Michelle on April 25, 2014
  88. physics

    we can say that the force of gravity is equal to mass times acceleration were the acceleration is equal to gravity sense gravity is an acceleration because of newtons second law force = mass times acceleration hence Fg = mass times acceleration Fg = mass

    asked by physics on September 12, 2009
  89. physics

    A constant net force of 385 N is applied upward to a stone that weighs 28 N. The upward force is applied through a distance of 2.0 m, and the stone is then released. To what height, from the point of release, will the stone rise? what formulas?

    asked by katie on January 3, 2008
  90. science

    A constant net force of 385 N is applied upward to a stone that weighs 28 N. The upward force is applied through a distance of 2.0 m, and the stone is then released. To what height, from the point of release, will the stone rise? what formula(s) do i use?

    asked by katie on January 3, 2008
  91. Physics

    A force, F = (6x̂ + 7y hat) N, is applied to an object at a point whose position vector with respect to the pivot point is r = (7x̂ + 7y hat + 7ẑ) m. Calculate the torque created by the force about that pivot point.

    asked by Ashely on November 14, 2014
  92. Physics

    An item is shot off the ground at a force of 31N and an angle of 36 degrees. In order to find the vertical force, would I use SIN, COSINE, or TANGENT? would it go 31 * COS/SIN/TAN (36) or 36 * COS/SIN/TAN (31)??

    asked by Sarah on March 13, 2010
  93. physics

    if the weight of the block,W,is 2.5 kilogram,the coefficient of static friction,0.25,and the coefficient of kinetic friction,0.15,determine: (a) the force necessary to hold the block sliding down (b) the force necessary to pull the block up the plane with

    asked by helpppp meeeeeeee PHYSICS......................... on March 6, 2013
  94. physics

    In a thundercloud there may be an electric charge of 54 C near the top of the cloud and −54 C near the bottom of the cloud. If these charges are separated by about 4 km, what is the magnitude of the electric force between these two sets of charges? The

    asked by hannah on February 19, 2013
  95. Physics

    A hockey stick applies a constant force over a distance of 0.127 m to an initially stationary puck, of mass 152 g. The puck moves with a speed of 51.0 m/s. With what force did the hockey stick strike the puck?

    asked by Riley on January 12, 2012
  96. Alegebra 1

    Urn A has balls numbered 1 through 7. Urn B has balls numbered 1 through 5. A ball is selected at random from urn A and then a ball is selected at random from urn B. What is the probability that a 4 is drawn from A followed by a 2 from B?

    asked by maria on September 8, 2009
  97. please help me paraphrase

    "The Antartic is the vast source of cold on our planet, just as the sun is the source of our heat, and it exerts tremendous control on our climate,"[Jacques] Cousteau tole the camera. "The cold ocean water around Antartica flows north to mix with warmer

    asked by Ayla on March 27, 2008
  98. active physics

    from the question we just did, how much force is neede to stop in 20 seconds! OK. think it through. If it's going at 10 m/s, and then it stops, what is it's change in velocity? is it 10 Yes, now it takes 20 seconds, so what is its acceleration (actually

    asked by alejandra on November 2, 2006
  99. math

    Consider a box that contains 14 red balls,12 blue balls and 9 yellow balls.A ball is drawn at random and the color is noted and then put back inside the box.Then,another ball is drawn at random.Find the probability? a.both are blue b.both balls are yellow

    asked by Anonymous on January 5, 2017
  100. physics

    A particle has a charge of +1.5 µC and moves from point A to point B, a distance of 0.19 m. The particle experiences a constant electric force, and its motion is along the line of action of the force. The difference between the particle's electric

    asked by Taylor on January 17, 2012