A2 kg Physics book is held 1.5 m above the floor for 75 s. The work done is 30 J OJ 980 J 100 J

Q: An athlete lifts a 410 N set of weights from ground level to a position over her head, a vertical…

A: Given data:  Weight = 410 N Distance (d) = 1.90 N Weight moved at constant speed Required: Work done…

Q: A 35 kg child climbs a 6.00 m long slide that is inclined 30° with the horizontal. What is the…

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Q: How much work do the breaks on a 3200 kg car need to do in order to slow it from 30 m/s to 20 m/s?

A: Given mass m=3200Kg V1=30m/s V2 = 20m/s According to work energy theorem work done by the car is…

Q: Starting at rest at the edge of a swimming pool, a 72.0-kg athlete swims along the surface of the…

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Q: A force of F = 1.12 x 104 Newtons does work of W = 1.18 x 10° Joules. What is = Work Force)? the…

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Q: A car of weight 140 kg. To what height should it be raised so that potential energy is 4220 J? Take…

A: Introduction : In this question we are provided with value of potential energy , mass and…

Q: 20. A 0.58 kg box is pulled with 70 N of force at an angle of 150 above the horizontal across a flat…

A: Given: m = 0.58 kg, F = 70 N, θ = 15°, s = 17 m

Q: A skier of mass 64 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to…

A: Given:Mass of the skier, m = 64 kgSlope = 30 degreesConstant velocity of the skier upto the slope, v…

Q: 14 A 50-kg crate is pulled 40m along a horizontal floor by a constant force of 100N exerted by a…

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Q: What is the work required to raise a 200 kg barbell to a height of 1.25 m? O 2 500 J O 1755 J O 3…

A: Write the expression for the work done to raise a barbell. Here, m represents the mass, g…

Q: S. A 10kg object is raised to a height of 20m. What is the magnitude of its potential energy?…

A: Given data,      Height  =  h       Mass  =   m      Acceleration due to gravity  =  g…

Q: 10 A man pulls a 20 kg box and the box moves with constant speed up a rough ramp as shown in the…

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Q: A 5.0-kg cart is moving horizontally at 4.0 m/s. In order to change its speed to 9.0 m/s, the net…

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Q: A 2.0-kg potato has been launched out of a potato cannon at 9.0 m/s. What is the kinetic energy? If…

A: mass, m = 2 kg, velocity, v = 9 m/s , height, h = 4 m

Q: 11. A child pulls a 7.4-kg toboggan 4.2 m across level ground with a 15-N force that is 34° above…

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Q: A skier of mass 62 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to…

A: mass of skier (m) = 62 kg distance pulled (d) = 50 m Angle of incline (θ) = 30oConstant speed (v) =…

Q: A horizontal force of 200 N is applied to move a 55 kg television set across a 10 m level surface.…

A: The work done by a force F to move a object by a distance x in the direction of force (θ=0°) is…

Q: How much work must be done on a heavy object to lower it from a height where it has 4000 Jof GPE to…

A: Initial gravitational potential energy = 4000 J Final gravitational potential energy = 2200 J…

Q: If I lower a weight to the ground, the total work I provide is: A. positive B. negative C. zero

A: If i lower a book on the ground then work provide by me is negetive. Because the force given by me…

Q: What could be the kinetic energy of a 0.8kg encyclopedia sitting on top of a table? a. 0 J b. 1 J…

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Q: A 710 kg car is moving on level ground at a constant speed of 23 m/s. It is subject to a drag force…

A: Given data:  Force (F) = 500 N Speed (v) = 23 m/s Required: The power (P)

Q: A stone with a mass of 2.40 kg is moving with velocity (6.20î – 1.80ĵ) m/s. (HINT: v² = v · v.) (a)…

A: Given  Massof stone m=2.40kg Initial velocity vi=6.20i-1.80j Final velocity vj=8i+4j

Q: A skier of mass 61 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to…

A: Given:Mass = 61 kgDistance to be covered = 55 mAngle = 30oSpeed = 2.1 m/s

Q: A 5.0-kg rock falls off of a 10 m cliff. If air resistance exerts a force of 10 N, what is the…

A: mass, m = 5 kg  height, h = 10 m resistive force, f = 10 N  initial velocity, u = 0 m/s

Q: A force of 120 N is used to lift a 10 kg box to a height of 5.0 m. If the box started from rest what…

A:

Q: Please show work

A: Given,

Q: What is the potential energy of an acorn falling out of a tree 20 meters above the ground that has a…

A: Given value--- height = 20 m. weight of acorn = 23.7 N. We have to find--- potential energy?

Q: A car of mass 500kg is moving at 10m/s. The engine does work on the car and the speed increases to…

A: SOlution: given that m = 500 kg v1 =10 m/s v2 = 16 m/s

Q: A 1600 kg car accelerates from rest to a speed of 40.0 m·s−1 in 6.00 s. a)  Calculate the work done…

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Q: Q45) A 8 kg box is moving horizontally at 6 m/s. To change its speed to 10 m/s, the net work done on…

A: Given a box of mass m=8 kg which is moving horizontally with a velocity of v1= 6 m/sec. Its speed is…

Q: A 2kg steel sphere is dropped from a height ʼn and, when it hits the ground, its kinetic energy is…

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Q: Starting at rest at the edge of a swimming pool, a 72.0 kg athlete swims along the surface of the…

A:

Q: An accelerating object of mass m=12 kg is fired with an initial speed v;-5 m/s at a starting point.…

A: Given: The mass of the body is 12 kg. The initial velocity of the object is 5 m/s. The final kinetic…

Q: A bag of wheat weight 320 kg. To what height should it be raised so that potential energy is 8220 J?…

A: Given:  Mass (m) = 320 kg Potential Energy (U) = 8220 J Acceleration due to gravity (g) = 9.8 m/s2…

Q: A skier of mass 71 kg is pulled up a slope by a motor-driven cable. (a) How much work is required…

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Q: A 70 kg person climbs a 2.0 m high flight of stairs within 8 seconds when he walks and 2 seconds…

A: Given data: Mass (m) = 70 kg Height (h) = 2.0 m Time taken in walks = 8 seconds Time taken in runs…

Q: Using 1000. J of work, a small object is lifted from the ground floor to the third floor of a tall…

A: Given parameter                        Work(W) = 1000J                        Time (T) = 20s

Q: A bag of wheat weighs 200 kg. To what height should it be raised so that potential energy is 9800 J?…

A: Given data:  Mass (m) = 200 kg Potential energy (U) = 9800 J Acceleration due to gravity (g) = 9.8…

Q: Q6. A 500 kg cloth bag is pulled up a smooth plane 6 m long to a platform which is 4 m above the…

A: Given  mass of cloth bag m=500kg height above ground,h=4m g=10m/s2

Q: Ex(N) 80 50 25 X(m) 10 25 40 50 58 1) Work by a force, drawn on a graph, determine: a) The total…

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Q: An archer pulls a bow string back 0.40 m by exerting a force that increases linearly from zero to…

A: Work done is defined as product of force and displacement. Mathematically, W=F.S F is force, S  is…

Q: 1. A man carries a load of 500 N to a distance of 100 m. The work done by him is B. 50,000 Nm C.0 D.…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Consider the figure below: Fapp = 120 N m = 30.0 kg f = 5.00 N d = 0.800 m w N Calculate the total…

A: Given data The force applied is given as Fapp = 120 N. The frictional force is given as f = 5 N.…

Q: A skier of mass 77 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to…

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Q: A 10 kg brick moves along an x axis. Its acceleration as a function of its position is shown in the…

A: Please see the answer in Step 2

Q: A bodybuilder lifts a 390 N set of weights from ground level to a position over his head, a vertical…

A: The expression for the work done is,

Q: A 5-kg sled has a potential energy of 6500 J at position A above the ground. When the sled strikes…

A:

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.