1. PHYSICS

    an electron is moving at 2x10^5 m/s through a uniform magnetic field of 1.4x10^-3 T.what is the magnitude of magnetic force if the velocity of the electron and the field make an angle of 45 degree.

    asked by please help w/ complete sol'n. on September 24, 2015
  2. Physics

    A 1.5kg frog on a string is being dragged along a table with a force of 12N. If string makes a 60 degree angle with the table, and the co efficent for friction is 0.15, what is the accleration of the frog.

    asked by Emily on December 14, 2010
  3. science

    a hydrauli press has a ram of 30 cm diameter and plunger of 4.5cm diameter. find the the weight lifted by the hydraulic press when the force applied at the plunger is 500N

    asked by sam on August 22, 2017
  4. physics

    you pull a sled along a horizontal surface by applying a force of 620 N at an angle of 42.0 degrees aboce the horizontal. How much work is doen to pull the sled 160m.

    asked by Erika on December 5, 2011
  5. science

    Okay do I have been trying countless to figure the answer to this question. If someone would help it would be greatly appreciated! The question is: "Calculate the force of gravity between a newborn baby of mass 4 kg and the obstetrician of mass 80 kg, who

    asked by JMAC on February 18, 2014
  6. Physics -URGENT-

    A 2 kg mass accelerates at 5.7 m/s 2 in a direction 19◦ north of east. One of the two forces acting on the mass has a magnitude of 17.1 N and is directed north. Determine the magnitude of the second force. Answer in units of N

    asked by Jenna on October 13, 2013
  7. Physics

    A thundercloud has an electric charge of 43.2 C near the top of the cloud and -38.7 C near the bottom of the cloud. The magnitude of the electric force between these two charges is 3.95 x 106 N. What is the average separation between these charges? (kc =

    asked by Michelle on February 20, 2013
  8. physics

    the question gives a F(x), the force acting on a car vs t(s). It asks you to find in unit-vector notation p (momentum) I know that p is the area under the curve, but how would you write this in unit vector notation?

    asked by farah on June 10, 2009
  9. Physics

    A man lifts a 1.0 kg stone vertically with his hand at a constant upward acceleration of 1.8m/2^2. what is the magnitude of the total force of the stone on the man's hand? In Newtons downward?

    asked by James on January 29, 2010
  10. Physics

    An electron is accelerated through 2300 V from rest and then enters a uniform 1.90 T magnetic field. (a) What is the maximum value of the magnetic force this charge can experience? (b) What is the minimum value this charge can experience?

    asked by Tamara on March 30, 2013
  11. Physics

    A 20 kg sphere is at the origin. A 10 kg sphere is at (x,y) = (-30cm,0cm) and a 30 kg sphere is at (0cm,40cm). Calculate the gravitational force on the 10 kg sphere, resulting from the other two spheres. Please make clear steps, thanks!

    asked by Sidiqi on February 1, 2018
  12. Physics-Mechaincs

    A 1.3 kg mass accelerates at 5.8 m/s2 in a direction 36◦ north of east. One of the two forces acting on the mass has a magnitude of 17.3 N and is directed north. Determine the magnitude of the second force. Answer in units of N.

    asked by Genevieve on September 19, 2010
  13. physics

    Consider three charges q1 = 6.0 µC, q2 = 1.8 µC, and q3 = -2.8 µC, arranged as shown below. Q1 is positive and is 3 cm away from Q2. Q2 is also positive and is 2 cm away from Q3 which is negative. (a) What is the electric field at a point 1.0 cm to the

    asked by wendlen on April 23, 2013
  14. Physics

    A person lifts a 5.2 kg cement block a vertical distance 1.2 m and then carries the block horizontally a distance 7.3 m. Determine the work done by the person and by the force of gravity in this process.

    asked by Mike on January 9, 2012
  15. physics

    A 1.3 kg mass accelerates at 8.2 m/s2 in a direction 23 degrees north of east. One of the two forces acting on the mass has a magnitude of 7.85 N and is directed north.Determine the magnitude of the second force. Im in need of serious help I only have one

    asked by Joe Rogers on September 29, 2012
  16. physics

    A proton moves perpendicularly to a magnetic field that has a magnitude of 1.22×10−2 T. The charge on a proton is 1.60×10−19 C. What is the speed of the particle if the magnitude of the magnetic force on it is 4.79× 10−14N? Answer in units of m/s

    asked by Anonymous on April 25, 2013
  17. PHYSICS Electricity

    A carbon atom's nucleus and its electrons become separated by 20nm . How much work does it take to separate them in J?I found the magnitude of the force the nucleus feels from the electrons,2.07*10^-11 N but the work? Could ex[lain me please?

    asked by Maurice on February 19, 2015
  18. physics

    Piston circled 1 in the figure below has a diameter of 0.28 in.; Piston circled 2 has a diameter of 1.6 in. In the absence of friction, determine the force vector F necessary to support the 500-lb weight. in lb i got 1.53 lb but it is incorrect

    asked by anna on April 10, 2016
  19. Physics-work,power,energy

    A 20 ton truck is pulling a 5 ton trailer.their common uniform velocity is 54 kmph.if the frictional force is 20N per both the truck and the trailer then power developed is?

    asked by Raj on October 31, 2010
  20. Physics....

    A spacewalking astronaut with a mass of 78 kg pushes off a 540 kg satellite, exerting a 125 N force for the 0.5 seconds it takes him to straighten his arms. How far apart are the astronaut and satellite after 60 seconds?

    asked by Me on October 11, 2011
  21. physics

    The coefficient of kinetic friction between a refrigerator (mass 93 kg) and the floor is 0.12, and the coefficient of static friction is 0.35. If you apply the minimum force needed to get the refrigerator to move, what will the acceleration then be?

    asked by jerr ****** on September 29, 2010
  22. Physics

    Calculate the gravitational force between the Sun and Saturn. The mass of the Sun is 1.99×1030 kg. The mass of Saturn is 5680×1023 kg. The distance between them is 143×1010 m. In Newtons

    asked by John on February 13, 2014
  23. Physics

    Two fixed, non-conductive, isolated rings of radii 25 cm are electrified and brought close to each other so that they are parallel. The distance between them is 1 m. You know that one of them has a charge of 1 nC(Nano Coulomb) evenly distributed on it, but

    asked by Physics Lover on June 13, 2013
  24. physics

    A bicyclist is pedaling along a road that is sloped upward with angle theta. At which of these road elevation angles must the bicycle wheels exert the greatest force back on the road to move the bicycle forward at the same constant speed?

    asked by marie on October 8, 2014
  25. physics

    A 4100 kg helicopter accelerates upward at 2.44 m/s^2. The acceleration of gravity is 9.8 m/s^2. What lift force is exerted by the air on the propellars? Answer in N. I wasn't sure which way to approach this problem, so i tried it two different ways: A.

    asked by alexa on July 2, 2011
  26. Physics 221

    A constant horizontal force of magnitude 18.0 N pushes a block of mass 2.00 kg along a rough horizontal surface for a distance of 2.00 m. During this operation the speed of the block changed from 4.00 m/s to 6.00 m/s. What work was done on the block by

    asked by K on December 10, 2009
  27. Physics

    Timmy the angry teen twirls dead rat mass is 2kg attached to the rusty chain length 1m in a vertical circle with what velocity should timmy rotates so that the chain just goes slack no force in the chain at the top?

    asked by Sakashi on June 8, 2018
  28. physics

    Three blocks are located on a horizontal table. The coefficient of kinetic friction between the blocks and the table is 0.276. They are connected by a massless cord, as shown in the figure below, and pulled to the right. The masses of the three blocks are

    asked by shelby on February 12, 2008
  29. Science

    A 0.44 kg mass at the end of a horizontal spring is displaced 1.5 m and released, then moves in SHM at the end of the spring of force constant 2 N/m. Find the potential energy of the system when the spring is stretched 0.9 m. The acceleration of gravity is

    asked by Emma on January 22, 2016
  30. Physics

    A child bounces a 55 g superball on the side- walk. The velocity change of the superball is from 22 m/s downward to 14 m/s upward. If the contact time with the sidewalk is 1 800 s, what is the magnitude of the average force exerted on the superball by the

    asked by chris on August 30, 2011
  31. physics

    A compact car, mass 730 kg, is moving at 1.00 ✕ 102 km/h toward the east. The driver of the compact car suddenly applies the brakes hard for 1.9 s. As a result, an average force of 4.8 ✕ 103 N is exerted on the car to slow it down. What is the momentum

    asked by sarah on October 26, 2014
  32. Physics Momentum

    A child bounces a 49 g superball on the side- walk. The velocity change of the superball is from 27 m/s downward to 12 m/s upward. If the contact time with the sidewalk is 1 800 s, what is the magnitude of the average force exerted on the superball by the

    asked by john Parker on January 11, 2012
  33. physics

    A man in a circus shows jumps from a of 10m and is caught by the safety net which sags 2m due to his weight.calculate the average force exerted by the net on the man to stop his fall if the mass of the man is 60kg

    asked by khizar on June 10, 2014
  34. physics

    A box of books weighing 324 N is shoved across the floor by a force of 527 N exerted downward at an angle of 35 below the hori- zontal. The acceleration of gravity is 9.81 m/s2 . If μk between the box and the floor is 0.59, how long does it take to move

    asked by Tanya on October 15, 2012
  35. Physics

    A race car travels 110 m/s around a circular track of radius 197 m. The track is banked at 22 degrees from the horizontal with a friction constant of 0.14. What is the magnitude of the resultant force on the 2800 kg driver and his car of the car does not

    asked by Tim on December 4, 2012
  36. Physics

    a quarter sits at the bottom of a wishing well where the gauge pressure reads 294 kPa. If the quarter has a diameter of 24mm, what is the total force acting on the top surface of the quarter? Note: Atmospheric pressure = 101.3

    asked by Drew on August 20, 2012
  37. Physics

    A potter’s wheel of radius 53.13 cm and mass 106.4 kg is freely rotating at 47.1 rev/min. The potter can stop the wheel in 5.65 s by pressing a wet rag against the rim and exerting a radially inward force of 66.2 N. What is the angular acceleration of

    asked by JAYZ on November 8, 2013
  38. Phsyics

    A bullet of mass 1.8 X 10-3 kg is moving at +500. m/s when it impacts a tree stump. It penetrates into the stump 6.00 centimeters before coming to rest. 1. Assuming the acceleration to be constant, calculate the force (including direction) exerted by the

    asked by Rachel on October 26, 2010
  39. Physics

    A spring with a force constant of 1.0 N/cm is compressed to a displacement of 10.0 cm. When released, it's energy is used to rotate a mass of 0.50 kg, secured by a spring, around in a circle with radius of 0.75 m, starting at the top of the circle. After

    asked by Laura on December 15, 2015
  40. physics

    A 64.2-kg skier coasts up a snow-covered hill that makes an angle of 23.8° with the horizontal. The initial speed of the skier is 7.18 m/s. After coasting 1.96 m up the slope, the skier has a speed of 3.13 m/s. Calculate the work done by the kinetic

    asked by dave on November 26, 2011
  41. English 4

    In the excerpt from Hard Times, Dickens refers to an “adversary.” What is the meaning of this word? In the context of the final paragraph of the excerpt, who or what is the adversary being discussed? An adversary is generally considered to be a person,

    asked by Ciara on April 27, 2015
  42. physics

    A 20000 kg airplane takes off by traveling 300 m down a runway while the engines exert a continuous force of 4000 N.(a) Calculate the change in kinetic energy of the airplane during takeoff.(b) Determine the speed of the airplane as it leaves the runway.

    asked by emily on January 13, 2012
  43. physics

    A rotating door is made from four rectangular sections, as indicated in the drawing. The mass of each section is 70 kg. A person pushes on the outer edge of one section with a force of F = 74 N that is directed perpendicular to the section. Determine the

    asked by regn on April 20, 2016
  44. physics

    a girl is using a rope to pull a box that weighs 300N across a level surface with constant velocity. the rope makes an angle of 30 degree above the horizontal and the tension in the rope is 100N. What is the normal force of the floor on the box?

    asked by saima on January 7, 2015
  45. physics

    On average, the electron and proton in a hydrogen atom are separated by a distance of (5.3 x 10 -11 m), assuming the orbit of the electron to be circular, (a) what is the electric force on the electron? and (b) WHat is the electrons orbital speed? and (c)

    asked by kyle on March 25, 2009
  46. Phsyics

    A bullet of mass 1.8 X 10-3 kg is moving at +500. m/s when it impacts a tree stump. It penetrates into the stump 6.00 centimeters before coming to rest. 1. Assuming the acceleration to be constant, calculate the force (including direction) exerted by the

    asked by Rachel on October 26, 2010
  47. Calculus (Definite Integrals - Force) Please Help

    A cylindrical oil storage tank 12 feet in diameter and 17feet long is lying on its side. Suppose the tank is half full of oil weighing 85 lb per cubic foot. What's the total force on one endof the tank?

    asked by Mishaka on March 12, 2012
  48. physics

    A rifle fires a(n) 3 g bullet with a muzzle velocity of 370 m/s into a block of wood. The bullet comes to rest after it has made a(n) 17 cm deep hole in the wood. v a What is the magnitude of the average frictional force slowed the bullet? Answer in

    asked by Anonymous on December 21, 2012
  49. physics

    A 72 kg man drops to a concrete patio from a window only 0.60 m above the patio. He neglects to bend his knees on landing, taking 2.0 cm to stop. (a) What is his average acceleration from when his feet first touch the patio to when he stops? m/s2 (b) What

    asked by johnny on December 11, 2008
  50. Physics

    Suppose under the certain conditions, the maximum force of friction that could act on a certain car was 3.35*10^3 N. The mass of the car is 857kg. What is the maximum possible centripetal acceleration of the car going around a bend? I know the equation for

    asked by Em on March 22, 2016
  51. Phsyics

    A bullet of mass 1.8 X 10-3 kg is moving at +500. m/s when it impacts a tree stump. It penetrates into the stump 6.00 centimeters before coming to rest. 1. Assuming the acceleration to be constant, calculate the force (including direction) exerted by the

    asked by Rachel on October 26, 2010
  52. Physics

    The Ladder is 5 m long and weighs 180N. The guy weighs 800N, and stops 1m horizontally up the ladder. The bottom of the ladder rest on a horizontal stone ledge at 53.1 degree. Find the normal and he frictional force at the base. HELP!!!

    asked by Anonymous on November 3, 2013
  53. physics 11

    Timmy twirls a dead rat (mass = 2 kg) attached to a rusty chain (length = 1m) in a vertical circle. With what velocity should Timmy rotate the rodent so that the chain just goes slack (no force in the chain) at the top? pls answer :(

    asked by Jeremy on April 16, 2016
  54. physics

    A 72 kg man drops to a concrete patio from a window only 0.60 m above the patio. He neglects to bend his knees on landing, taking 2.0 cm to stop. (a) What is his average acceleration from when his feet first touch the patio to when he stops? m/s2 (b) What

    asked by johnny on December 11, 2008
  55. CALCULUS

    A cylindrical oil storage tank 12 feet in diameter and 17feet long is lying on its side. Suppose the tank is half full of oil weighing 85 lb per cubic foot. What's the total force on one endof the tank?

    asked by Mishaka on March 12, 2012
  56. Physics

    A 225 kg box is loaded onto a truck by pulling it up an inclined plane (10 m hypotenuse difference) by a force that is parallel to the incline (T = 315 N). If the bed of the truck is 1.2 m above the ground what is the efficiency of this simple machine in

    asked by Matt on April 7, 2011
  57. physics

    A 2.24 kg mass on a frictionless horizontal track is attached to the end of a horizontal spring whose force constant is 4.45 N/m. The mass is displaced 3.06 m to the right from its equilibrium position and then released, which initiates simple harmonic

    asked by Emily on December 2, 2012
  58. Chemistry

    The voltaic cell described by the cell notation has a standard emf (electromotive force) of 0.94 V. Calculate the value (J) for the maximum electrical work that the cell can do under standard conditions. Round your answer to 3 significant figures. Pt(s) /

    asked by Roger on December 3, 2010
  59. Physics

    The Ladder is 5 m long and weighs 180N. The guy weighs 800N, and stops 1m horizontally up the ladder. The bottom of the ladder rest on a horizontal stone ledge at 53.1 degree. Find the normal and he frictional force at the base. HELP!!!

    asked by Anonymous on November 3, 2013
  60. Physics

    Imagine a landing craft approaching the surface of the moon of a distant planet. If the engine provides an upward force (thrust) of 2890 N, the craft descends at constant speed; if the engine provides only 2200 N, the craft accelerates downward at 0.36

    asked by Hannah on January 2, 2016
  61. physics

    At an outdoor market, a bunch of bananas attached to the bottom of a vertical spring of force constant 16.0 N/m is set into oscillatory motion with an amplitude of 20.0 cm. It is observed that the maximum speed of the bunch of bananas is 39.6 cm/s. What is

    asked by kate on November 9, 2011
  62. physics

    A rocket with mass of 60,000 kg is placed on a launching platform verticlly. its engine is started and the rocket gives out gas at rate of 50kgs^-1 with a speed of 5000ms^-1 a) calculate the up trust force caused by the gas. b) can the rocket be launched

    asked by saima on January 7, 2015
  63. Physics

    The drawing shows three particles far away from any other objects and located on a straight line. The masses of these particles are mA = 363 kg, mB = 517 kg, and mC = 154 kg. Find the magnitude and direction of the net gravitational force acting on each of

    asked by Don on October 30, 2012
  64. Science

    A 0.44 kg mass at the end of a horizontal spring is displaced 1.5 m and released, then moves in SHM at the end of the spring of force constant 2 N/m. Find the potential energy of the system when the spring is stretched 0.9 m. The acceleration of gravity is

    asked by Emma on January 22, 2016
  65. Physics

    A 1.80 kg object is connected to a spring of force constant 120 N/m. How far is the spring stretched if it is used to drag the object across a floor at constant velocity? Assume the coefficient of kinetic friction is 0.60.

    asked by Anonymous on October 5, 2010
  66. Math,Physics,Chemistry

    Calculate the gravitational force of attraction between two protons in a chemical compound.Take the mass of proton as 0.0000000000000000000000000000167 kilogramme and the distance between the protons in a chemical compound is 0.000000000010 metre.

    asked by Ibraheem on November 1, 2012
  67. physics

    A body is in equilibrum when three forces act on it.Two of the forces are F1 of magnitude 8Newtons acting due east and F2 which is 5Newtons acting 060. find the magnitude and direction of the third force.

    asked by joe on November 15, 2016
  68. Physics

    A gardener waters a lawn. the hose ejects 5*10^-4 m^3 of water per second. The area of the mouth of the hose is 5 cm^2. Find the backward force exerted on the gardener.[density of water=10^3kg/m^3]

    asked by Alice on November 14, 2015
  69. physics

    A crate with a mass of 50 kg has a coefficient of static friction with the floor of 0.8 and a coefficient of kinetic friction of 0.25. If it is pushed with a force of 425 N, how long will it take to move it across a 65 meter horizontal floor?

    asked by Rebecca on September 30, 2012
  70. Physics

    Some bags (the mass of each bag is 50 kg) are put in the truck of 200 kg mass. After applying 400 N force the car started moving with 1 m/s accelaration.Now my question is'', how many Bags are in the truck?

    asked by Akhter on December 6, 2015
  71. Pre-Calculus Help?

    A 5-lb force acting in the direction of (5, -3) moves and object just left over 12 ft. from point (0, 6) to (7, -4). Find the work done to move the object to the nearest foot-pound. a. 11 ft. * lbs b. 34 ft. * lbs c. 56 ft. * lbs d. 61 ft. * lbs

    asked by ADOG on May 18, 2018
  72. College Physics

    A fire hose 4.79 cm in diameter is capable of spraying water at a velocity of 17.1 m/s. For a continuous horizontal flow of water, what horizontal force should a fireman exert on the hose to keep it stationary?

    asked by Kimmy on October 20, 2013
  73. Physics

    A child of mass m sits in a swing supported by two chains, each of length R. The tension in each chain at the lowest point is T. Find the force of the seat on the child at the lowest point

    asked by Kari on October 12, 2011
  74. physics

    When you are running and want to stop quickly, you must decelerate quickly. What is the origin of the force that causes you to stop? Estimate the maximum rate of deceleration of a person running at top speed to come to rest.

    asked by perry on September 11, 2009
  75. physics

    You push a 45 kg wooden box across a wooden floor at a constant speed of 1.0 m/s. The coefficient of kinetic friction is 0.15. Now you double the force on the box. How long would it take for the velocity of the crate to double to 2.0 m/s?

    asked by christina on November 21, 2009
  76. Engineering

    A person rappels down a cliff. The person uses a 0.5 inch diameter rope, creating a 170-lb internal force. What is the normal stress in the rope. I got 340 by diving 170 from .5 is this right?

    asked by Josh on August 7, 2009
  77. Physics

    A crate with a mass of 50 kg has a coefficient of static friction with the floor of 0.8 and a coefficient of kinetic friction of 0.25. If it is pushed with a force of 425 N, how long will it take to move it across a 65 meter horizontal floor?

    asked by Katie on October 1, 2012
  78. Physics

    A 1300-kg space vehicle falls vertically from a height of 2500 km above the earth's surface. Determine how much work is done by the force of gravity in bringing the vehicle to the earth's surface.

    asked by Steve on November 9, 2008
  79. physics

    A spring of force constant 655 N/m is used to launch a 5.25 kg mass from the edge of a frictionless table that is 1.20 m above the floor. How far horizontally away from the table will the mass land if the spring was compressed 42.0 cm before launching?

    asked by Ben on February 13, 2014
  80. physics

    The force F = (3.2, -7.1) N acts on a mass of 1.15 kg. At time t = 0 s, the mass has a velocity v0 = (-0.46, 0.36) m/s. What is the angle (in degrees) of the initial velocity, measured counter-clockwise from the +x-axis? I got 38.04 degrees but isn't the

    asked by help on November 21, 2010
  81. College Physics

    A concept question: Suppose that the centripetal force acting on an object in circular motion were increased to a new value, and the object remained in circular path with the same radius. How would its motion be affected?

    asked by Eric on September 30, 2010
  82. physics

    The roof on a house rises 1.50 m over a horizontal diestance of 3.50 m. A 72.9-kg roofer stands on the roof. Is the frictional force that keeps the roofer from slipping equal in magnitude to F perpendicular or F paralell? What is its magnitude?

    asked by Corey on December 7, 2009
  83. physics

    if Royce was 10 years old and he had a mass of 30kg. but by the time he turned 16 his mass has grown to 60kg. how much larger is the gravitational force between Royce and earth at age 16 compared to age 10

    asked by krystal on March 11, 2013
  84. Physics!

    Question #4 : What is the amount of energy used to raise a 3000N load 0.4m? A force of 1000N is used to raise that same load up. 1)State the mechanical advantage of the machine used? 2)Is this machine 100% efficient?

    asked by Jessie USA on March 7, 2017
  85. Calculus

    An underwater viewing window is installed at an aquarium. The window is circular with radius 5 feet. The center of the window is 40 feet below the surface of the water. Find the hydrostatic force on the window.

    asked by Lymara on February 27, 2018
  86. PHYSICS

    A thundercloud has an electric charge of 43.2 C near the top of the cloud and -38.7 C near the bottom of the cloud. The magnitude of the electric force between these two charges is 3.95 x 106 N. What is the average separation between these charges? I'm

    asked by ELIZA on March 15, 2011
  87. Physics

    A spherical body of diameter 4cm falls freely through air with the velocity of 0.5m/s. The coefficient of velocity of air is 2*10^-5Nm/m^2.find the viscous force acting on the body.

    asked by Aparna on March 30, 2017
  88. Science

    Two equal and oppisitely directed forces acting on an object will be in equilibrium . (a)only if they act on the same point on he object. (b)if they are separated by a distance. (c)when they are balanced by a third force. (d)when their moments about the

    asked by Aisha on April 19, 2018
  89. physics

    You launch a model rocket up into the sky. Right after launch the rocket is accelerating upwards at 10 m/s^2. What is the magnitude of the net force in Newtons on the rocket if the rocket has a mass of 0.1 kg? Please give your answer with solution .

    asked by anonymous on June 24, 2013
  90. physics

    A 3 N weight slides down a ramp made of sandpaper. The coefficient of friction is 0.8, and the ramp is at an angle of 50° to the horizontal. How could you calculate the magnitude of the friction force? A. 3 N × sin(50°) B. 3 N × 0.8 × 50° C. 3 N ×

    asked by joe on June 27, 2013
  91. physics

    Child weighs 29 kg on a swing supported by two chains. Another child pulls swing back to the chains to make 30 degree angle with the vertical. What force is exerted by each chain

    asked by anonymous on November 18, 2010
  92. physics

    A gardener pushes a box of tools across a driveway by applying a 27.5- N force that pushes downward at an angle of 32.8 o with respect to the horizontal. How much work is done if the box moves 3.25 m in the horizontal direction?

    asked by Jamila on October 19, 2014
  93. physic

    An in-ground swimming pool has the dimensions 20 m x 15 m. It is filled with water to a uniform depth of 3.00 m.What is the total force exerted on the bottom of the swimming pool?The density of water = 1.00 × 103 kg/m3.

    asked by Anonymous on January 9, 2016
  94. physics

    a 2500kg car is rounding a circular turn of radius 200m at constant speed. the magnitude of its acceleration is 2m/s2.what is the speed of the car? how much is the centripetal force?how much is the centrifugal acceleration?

    asked by nuche Nina cajes on August 1, 2013
  95. physics

    An electron, moving with a speed, 6.8 km/s, enters a magnetic field that has a strength of 6.9 T. The magnetic force on the electron is perpendicular to the electron's velocity. Determine the radius of the resultant path of the electron.

    asked by Jamie on April 9, 2010
  96. physics

    A hockey puck of mass 0.05 kg sliding on the ice with velocity 20m/sec is stopped by a goalie in 0.10 sec. what is the magnitude and direction of the force exerted by the goalie on the puck

    asked by kwaku on November 13, 2010
  97. physics

    The coefficient of kinetic friction between a refrigerator (mass 93 kg) and the floor is 0.12, and the coefficient of static friction is 0.35. If you apply the minimum force needed to get the refrigerator to move, what will the acceleration then be? ____

    asked by Anonymous on September 29, 2010
  98. physics

    a 2500kg car is rounding a circular turn of radius 200m at constant speed. the magnitude of its acceleration is 2m/s2.what is the speed of the car? how much is the centripetal force?how much is the centrifugal acceleration?

    asked by nuche Nina cajes on August 1, 2013
  99. physics

    two llong parallel vertical wires 0.3m apart are placed east-west of one another.The current in the eastely one is 30A and that in the other is 20A.Both currents flow upwards.The earth"smagnetic field is horizontal directed north and has magnetude field

    asked by kabelo on August 24, 2010
  100. physical sciences

    The mass of a minibus is 1500kg,assume that the passenger have an average mass of 50kg each.The driver is moving at a speed of 30m/s when he notice that the traffic light ahead have turned to red.he applied a force of 9000N on the break pedal,calculate

    asked by ascentia on February 21, 2016