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a teacher pushed a 98 newton desk acrosss a floor for a distance of 5 meters she exerted a horizontal force of 20 newton How much work was done?

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  1. science

    a teacher pushed a 98 newton desk acrosss a floor for a distance of 5 meters she exerted a horizontal force of 20 newton How much work was done?
  2. scientist

    A techer pushed a 98 newton desk across a floor for a distance of 5 meters she exerted a horizontal force of 20 newtons. how much work was done?
  3. physics

    Imagine yourself seated on a wheeled desk chair at your desk. Consider friction forces between the chair and the floor to be negligible. However, the friction forces between the desk and the floor are not negligible. When sitting at rest, you push
  4. physics

    A desk weighing 80 N rests on the floor. The coefficient of friction between the floor and the desk is 0.25. What is the frictional force between yhe desk and the surface of the floor?
  5. physics

    you toss your keys at the desk. keys leave your hand at y0 = 2.04 meters above the floor traveling at an angle 𝜃 = 11.7 degrees above the horizontal. The keys land exactly in the middle of the desk (ydesk = 0.85 meters high and xdesk = 4.64 meters
  6. Science

    5. A child pushes a desk with a force of 15 N to the right. The desk accelerates to the right. Which of the following statements correctly represents Newton’s third law and the interaction between the child and desk? 1)The desk exerted slightly more than
  7. physics

    a man having a mass of 60 kg exerts a horizontal force of 200 newton in pushing a 90 kg object a distance of 60 meters along horizontal floor. he does this at constant velocity in 3 seconds.the weight of this man is[in newton,taking g =10m/s square]
  8. Physics

    In moving a 35.0 kg desk from one side of a classroom to the other, a professor finds that a horizontal force of 300 N is necessary to set the desk in motion, and a force of 185 N is necessary to keep it in motion at a constant speed. (a) What is the
  9. Physics

    In moving a 35.0 kg desk from one side of a classroom to the other, a professor finds that a horizontal force of 300 N is necessary to set the desk in motion, and a force of 185 N is necessary to keep it in motion at a constant speed. (a) What is the
  10. Physics

    Can someone, please help me out with this question. A uniform rectangular 91.21 kg refrigerator with height h = 2.069 m and width w = 1.153 m is pushed at a constant velocity across a level floor. The refrigerator is pushed in the horizontal direction
  11. Physics

    You set up a ramp on your desk at home. Marbles rolling down the ramp and horizontally off your desk consistantly land 52.0 cm from the base of your desk. Your desk is 69.0 cm high. If you pull your desk over to the window of your second story room and
  12. Pysics

    Marbles rolling down the ramp and horizontally off your desk consistently land 46.0 cm from the base of your desk. Your desk is 78.5 cm high. If you pull your desk over to the window of your second story room and "launch" marbles to the ground (6.04 meters
  13. physics

    An autographed baseball rolls off of a 0.82 m high desk and strikes the floor 0.28 m away from the desk. How fast was it rolling on the desk before it fell off? The acceleration of gravity is 9.81 m/s 2
  14. physics

    An autographed baseball rolls off of a 1.3 m high desk and strikes the floor 0.74 m away from the desk. The acceleration of gravity is 9.81 m/s2 . How fast was it rolling on the desk before it fell off?
  15. physics

    An autographed baseball rolls off of a 0.59 m high desk and strikes the floor 0.42 m away from the desk. How fast was it rolling on the desk before it fell off? The acceleration of gravity is 9.81 m/s 2 . Answer in units of m/s
  16. physics

    An autographed baseball rolls off of a 0.62 m high desk and strikes the floor 0.33 m away from the desk. How fast was it rolling on the desk before it fell off? The acceleration of gravity is 9.81 m/s 2 . Answer in units of m/s
  17. Physics

    An autographed baseball rolls off of a 0.55 m high desk and strikes the floor 0.82 m away from the desk. The acceleration of gravity is 9.81 m/s2 . How fast was it rolling on the desk before it fell off? Answer in units of m/s.
  18. science

    An autographed baseball rolls off of a 1.3 m high desk and strikes the floor 0.15 m away from the desk. How fast was it rolling on the desk before it fell off? The acceleration of gravity is 9.81 m/s 2 . Answer in units of m/s.
  19. Physics

    An autographed baseball rolls off of a 0.59 m high desk and strikes the floor 0.10 m away from the desk. How fast was it rolling on the desk before it fell off? The acceleration of gravity is 9.81 m/s^ Answer in units of m/s.
  20. physics

    An autographed baseball rolls off of a 0.63 m high desk and strikes the floor 0.46 m away from the desk. The acceleration of gravity is 9.81 m/s2 . How fast was it rolling on the desk before it fell off? Answer in units of m.
  21. Physics

    An autographed baseball rolls off of a 0.85 m high desk and strikes the floor 0.68 m away from the desk. How fast was it rolling on the desk before it fell off? The acceleration of gravity is 9.81 m/s2 . Answer in units of m/s
  22. physics

    An autographed baseball rolls off of a 0.67 m high desk and strikes the floor 0.37 m away from the desk. How fast was it rolling on the desk before it fell off? The acceleration of gravity is 9.81 m/s 2 . Answer in units of m/s
  23. Physics

    a student pushes on a desk with a force of 75 N causing it to begin sliding. if the desk weighs 400 N then calculate the coefficient of static friction between the desk and the floor
  24. Science

    How much must you pull the rope if a force if 648 newtons is needed to lift a 1472 Newton desk 2.46 meters
  25. Physics

    An autographed baseball rolls off of a 1.5m high desk and strikes the floor 0.60m away from the desk. How fast was it rolling on the desk before it fell? The acceleration of gravity is 9.81m/s^2. Answer in units of m/s
  26. LAMP

    An autographed baseball rolls off of a 1.4 m high desk and strikes the floor 0.86m away from the desk. The acceleration of gravity is 9.81m/s squared. How fast was it rolling on the desk before it fell of? Answer in units of m/s.
  27. physics

    A uniform bar 25 meters long weighs 10,000 Newton's. From end A weight of 2500 Newton's is hung. At B the other end of the bar, there is a weight of 3500 Newton's. An upward force of 3000 Newton's is exerted 4 meters from B, while and upward force of 4000
  28. PHYSICS

    Example 2: a) A desk has a mass of 68.75 kilograms. If the coefficient of static friction between the desk and the floor is 1.1, what force must be used to move the desk from rest? b) Once the desk above is in motion, what force must be used to keep it
  29. Pre-Algebra

    I have another Pythagorean theorem: word problem that has stumped me for the last time. The floor of storage unit is 12 meters long and 9 meters wide. What is the distance between two opposite corners of the floor? Thank you so much!
  30. math

    A fulcrum of a lever (which is placed horizontally) is placed 8 meters from a force of 28 Newton and another force of 14 Newton is placed on the opposite side from the fulcrum. Determine the distance between the forces of 14 Newton from the fulcrum in
  31. math

    A fulcrum of a lever (which is placed horizontally) is placed 8 meters from a force of 28 Newton and another force of 14 Newton is placed on the opposite side from the fulcrum. Determine the distance between the forces of 14 Newton from the fulcrum in
  32. physics

    a 60 kilogram student sitting on a hardwood floor accelerates at 1.3 meters per second squared when pulled by a 240 newton horizontal force. what is the coefficient of friction between the student and the floor?
  33. physics

    a man having a mass of 60 kg exerts a horizontal force of 200 newton in pushing a 90 kg object a distance of 60 meters along horizontal floor. he does this at constant velocity in 3 seconds.the weight of man will be?
  34. science

    A 34.0-kg crate is being pushed across a floor. The net horizontal force on the crate is 80.0N. Starting from rest, the crate is pushed over a distance of 4.4m. What is the final speed of the crate?
  35. physics

    1. A baseball rolls off a 0.80 m high desk and strikes the floor 0.25 m away from the base of the desk. How fast was the ball rolling?
  36. physics

    A student pushes on a desk with a horizontal force of 125 N and moves the desk 3.2 m directly across the floor. How much work is done?
  37. transitional math

    Im stuck on questions can anyone help me ? A)Which situation can be modeled by tossing a coin 3 times choosing which one of sixteen teams will win a tournament? B)picking one of six math teacher, C)decide which English teacher of eight will win a trip to
  38. science

    a box pushed across the floor for a dis tance of 5 meters with a force of 50 newtons in 5 second how much work is done? what is the power?
  39. Physics

    An autographed baseball rolls off of a 8.9 m high desk and strikes the floor 3.0 m away from the base of the desk. How fast was it rolling? Use g = -10m/s2.
  40. Science

    an autographed baseball rolls off of a .70m high desk and strikes the floor .25m away from the base of the desk. How fast was it rolling?
  41. physics

    a wooden box weighing 286N is pushed across the floor by a workman who exerts a horizontal force of 143N. If the force of friction between the box and the floor is 28N, what is the acceleration (in meters per second) of the box?
  42. physics

    A wooden box weighing 271 N is pushed across the floor by a workman who exerts a horizontal force of 144 N. If the force of friction between the box and the floor is 28 N, what is the acceleration (in meters/second^2) of the box?
  43. physics

    A wooden box weighing 281 N is pushed across the floor by a workman who exerts a horizontal force of 166 N. If the force of friction between the box and the floor is 21 N, what is the acceleration (in meters/second^2) of the box?
  44. physics

    wooden box weighing 271 N is pushed across the floor by a workman who exerts a horizontal force of 144 N. If the force of friction between the box and the floor is 28 N, what is the acceleration (in meters/second^2) of the box?
  45. physics

    An athlete at the gym holds a 4.33 kg steel ball in his hand. His arm is 75.0 cm long and has a mass of 5.28 kg. What is the magnitude of the torque about his shoulder if he holds his arm straight out to his side, parallel to the floor? Responses Physics -
  46. Physics

    A Physics professor is pushed up on a ramp inclined at an angle of 35.0° above the horizontal as he sits in his desk chair that slides on frictionless rollers. The combined mass of the professor and the chair is 86.0 kg. He pushed at a distance 2.95 m
  47. physics

    An effort of 250 newton raises a load of 1000 newton through a distance of 500 centimeters in a pulley system,if the effort moves through 3o meters . calculate the work done in raising the load?
  48. Physics

    In moving a 35kg desk from one side of a room to another, a man finds that a horizontal force of 275N is necessary to set the desk in motion, and a force of 195N is necessary to keep it in motion at a constant speed. What are the coefficients of both
  49. Physics

    In moving a 35kg desk from one side of a room to another, a man finds that a horizontal force of 275N is necessary to set the desk in motion, and a force of 195N is necessary to keep it in motion at a constant speed. What are the coefficients of both
  50. Math

    Best Ride Sports sells snowboard equipment and clothing. The store measures 15 m by 13 m. The checkout desk measures 3 m by 1 m. A display shelf measures 11 m by 2 m. The floor around the desk and shelf is tiled. What area of the floor is tiled?
  51. Math

    You are given the job of laying carpet for a six-story building. At each floor the dimensions of the floor are 75 meters in length by 40 meters in width. A stairwell takes up a space 2.5 m by 1.5 m, and cuts through each floor. If the rest of the floor
  52. Physics

    A crate is initially at rest on a rough, horizontal floor. The crate moves in a straight line as it is pushed resulting in the crate speeding up at a constant rate of 3.89 m/s2. After a while, the crate is no longer being pushed and the crate slows down at
  53. physics!

    In order to measure the length of a long flourescent ceiling lamp, a student makes a very small hole in a piece of paper, holds the paper above the floor, measures the distance between the hole and the floor, and finally measures the length of the light's
  54. physics!!!!!!!

    In order to measure the length of a long flourescent ceiling lamp, a student makes a very small hole in a piece of paper, holds the paper above the floor, measures the distance between the hole and the floor, and finally measures the length of the light's
  55. Physics

    In order to measure the length of a long flourescent ceiling lamp, a student makes a very small hole in a piece of paper, holds the paper above the floor, measures the distance between the hole and the floor, and finally measures the length of the light's
  56. PHYSICS

    In order to measure the length of a long flourescent ceiling lamp, a student makes a very small hole in a piece of paper, holds the paper above the floor, measures the distance between the hole and the floor, and finally measures the length of the light's
  57. trigonometry

    a box is pushed applying a force of 7N against a slippery floor, at an angle of 36 degrees with the floor. what is the horizontal component of the floor?
  58. Physics

    A cat crouches on the floor, at a distance of 1.6 m from a desk chair of height .45 m. The cat jumps onto the chair, landing with zero vertical velocity. The desk chair has frictionless coasters and rolls away when the cat lands. The mass of the cat is 5.7
  59. PHYSICS!

    an object weighs 528.0 Newton. It is being pushed along a horizontal surface by a 475.0-Newton force. Determine the mass of the object in a numerical form.
  60. Science

    A box weighing 30 N is pushed a distance of 5 meters. How much work was done?
  61. math

    Work the following area application problem. You are given the job of laying carpet for a six-story building. At each floor the dimensions of the floor are 75 meters in length by 40 meters in width. A stairwell takes up a space 2.5 m by 1.5 m, and cuts
  62. physics

    A 5-kg box is pushed across a horizontal floor by a 20-N force that is angled 30 degrees below the horizontal. What is the coefficient of kinetic friction between the box and the floor if the box is pushed at a constant speed?
  63. physics

    a 650 newton crate rests on the floor. how much work is required to move it at a constant speed, 3 meters against a friction force of 150 Newtons
  64. Biomechanics

    If John was pushing a 300 kg desk across the floor with a constant acceleration of 3.5 m/s squared, how much force would he have to apply to the desk to maintain the acceleration, considering the coefficient of kinetic friction is 0.60?
  65. physics

    As shown in the figure below, a box of mass m = 57.0 kg (initially at rest) is pushed a distance d = 79.0 m across a rough warehouse floor by an applied force of FA = 202 N directed at an angle of 30.0° below the horizontal. The coefficient of kinetic
  66. Math

    My teacher gave me a box and told me to see how many I could fit in the class room without taking out the heater or the desk. Ive tried many different things but I just cant figure it out. I don't know the measurments or anything. How do I do It? The desk
  67. math

    In pushing a desk a distance of 2.0 meters, a student accomplished 300.0 joule amount of work. How much force was expended?
  68. physics

    james pushed his 10 kg cart with a constant horizontal force of 9.0 Newtons over a distance of 3.1 meters. If all frictional forces are neglected and the cart started from rest, what is the grocery cart's final speed in meters per second?
  69. Science-Enr. Phys.

    A box of books weighing 325 N moves at a constant velocity across the floor when the box is pushed with a force of 425 N exerted downward at an angle of 35.2 degrees below the horizontal. Fink Mu,k between the box and the floor. There have been several of
  70. physics

    1. The acceleration due to gravity calculated this way works well for objects near the Earth’s surface. How would you have to change the above equation if the object was 100,000 meters above the ground? (Note: this question refers to Newton’s equation
  71. physics

    1. The acceleration due to gravity calculated this way works well for objects near the Earth’s surface. How would you have to change the above equation if the object was 100,000 meters above the ground? (Note: this question refers to Newton’s equation
  72. physics

    A basketball rolls to the right with a velocity of 4 meters per second. It is pushed up and accelerated up for 2 seconds with an acceleration of 4 meters per second . Then for 1 second it is pushed and accelerated down with an acceleration of 12 meters per
  73. physics

    an 8-newton foce is applied to a 4-kg object. what is the rate of acceleration. a.4 meters per second b.8 meters per second c.2 meters per second d.12 meters per second
  74. Physics

    A box weighing 600 N is pushed along a horizontal floor at a constant velocity with a force of 250 N parallel to the floor. What is the coefficient of Kinetic friction between the box and the floor?
  75. science

    The acceleration due to gravity calculated this way works well for objects near the Earth’s surface. How would you have to change the above equation if the object was 100,000 meters above the ground? (Note: this question refers to Newton’s equation for
  76. math

    Of the 7pens in ms.youngs desk,3 are blue. Of the 9pens in Mr.foxs desk, are blue. Which teacher has a greater fraction of pens that are blue
  77. 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
  78. English

    1. The fan is above the desk. (Can we use 'above' any time when the fan is on the ceiling, for example, in each corner. When the fan is directly over the desk, can we use "over" as in the sentence? Can we use 'above' when the fan is in each corner of the
  79. Physics

    A ninety kilogram sofa is being pushed by four meters to the other side of a hall. After an initial push the sofa is pushed with a 600 N force. In this case, 0.6 is the coefficient of kinetic friction. (The diagram shows the sofa being pushed from the
  80. Physical Science

    The static frictional between a 500 kilogram box of bricks and the floor is 500 Newton’s. The kinetic frictional force in only 220 Newton’s. How many Newton’s of force must a worker exert to get the moving?
  81. physics

    A crate pushed along the floor with velocity \vec{v} _{i} slides a distance d after the pushing force is removed.If the mass of the crate is doubled but the initial velocity is not changed, what distance does the crate slide before stopping?
  82. physics

    If you push a box a distance of 2,000 meters with a force of 1 newton, how many Calories have you used? 1 Calorie= 4,187 Joules
  83. science

    a piece of furniture that weighs 500 newtons is pushed along the ground for a distance of 10 meters then lifted 2 meters above the ground into a truck. how much work is done if the force required to push the furniture is 150 newtons?
  84. science

    use newton's first law to explain why a book on a desk does not move.
  85. Physics

    Calculate the change in potential energy of a 86.9 kg man when he takes an elevator from the first floor to 15th floor, if the distance between floors is 4.47 m. *This building has a thirteenth floor! Keep in mind that he stands on the floor of the top
  86. Physics

    A golf ball, dropped from 2 meters above a floor, rebounds to a height of 1.6 meters. What percentage of its energy of motion is lost in the collision with the floor?
  87. physics

    a warehouse employee is pushing a 38 kg desk across a floor at a constant speed of 0.4 m/s. How much work must the employee do on the desk to change the speed of 1.5m/s?
  88. physics

    A shuffleboard disc has a mass of 250g. The coefficient of friction between the disc and the floor is .60. A player pushes the disc applying a horizontal force of 5.0 N for .35 s. How much does the disc weight? What is the frictional force between the disc
  89. physics

    A shuffleboard disc has a mass of 250g. The coefficient of friction between the disc and the floor is .60. A player pushes the disc applying a horizontal force of 5.0 N for .35 s. How much does the disc weight? What is the frictional force between the disc
  90. Help with Math

    The path of a basketball can be modeled by the equation h(d)=-0.13d^2+d+2. where h(d) is the height in meters or the basketball and d is the horizontal distance in meters from the player. How far does the ball travel horizontally before hitting the floor?
  91. Physics

    A box is pushed across a floor with a force of 2.8 N at an angle of 26.8 degrees above the horizontal. How much work, in Joules, must be done to move the box a distance of 8.3 m?
  92. math

    One of the events at the circus starred Gabriella the Human Cannonball. On Saturday she performed in four shows. Shot from a cannon, her distances measured 9.03 meters, 16.61 meters, 18.44 meters, and 21.75 meters. What was the total distance Gabriella
  93. physics

    During lab students are asked to set up the Atwood's device shown in the diagram below. Mass 1 = 4.50 kg and mass 2 = 2.10 kg. If the distance to the floor, S = 1.20 meters, how much time is needed for mass 1 to reach the floor? please explain how to do
  94. English

    Thank you for your help. I have posted one more time about the use of 'it.' 1. The station is 50 meters away. 2. The station is 50 meters. 3. It is 50 meters away. 4. It is 50 meters. 5. The distance is 50 meters away. 6. The distance is 50 meters.
  95. AP Physics C

    A 4.10 kg block is pushed along a floor by a constant applied force that is horizontal and has a magnitude of 39.0 N. Figure 6-26 gives the block's speed v versus time t as the block moves along an x axis on the floor. What is the coefficient of kinetic
  96. Physics

    A factory worker pushes a 32.0 kg crate a distance of 4.9 m along a level floor at constant velocity by pushing downward at an angle of 32 ∘ below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.25. What magnitude of
  97. physics

    A chair of weight 150 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 36.0 directed at an angle of 40.0 below the horizontal and the chair slides along the floor.Using Newton's laws, calculate , the
  98. physics

    A chair of weight 150 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 38.0 directed at an angle of 41.0 below the horizontal and the chair slides along the floor.Using Newton's laws, calculate , the
  99. physics

    A chair of weight 150 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 36.0 directed at an angle of 40.0 below the horizontal and the chair slides along the floor.Using Newton's laws, calculate , the
  100. Physics

    A chair of weight 85.0 N lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of F = 44.0 N directed at an angle of 42.0 degrees below the horizontal and the chair slides along the floor. Using Newton's laws,

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