A painter lifts a can of paint that weighs 40 N and carries it a distance of 2 meters. How much work was done on the can? A student calculated the work done on a box as 60 Joules. The box weighs 30 N and was moved 3 meters. Is the student's calculation correct? Use math to justify your answer/

Q: You pull an 8 kg box 4 meters along the ground by pulling up at an angle of 30 degrees from the…

A: Given: The mass of the box is 8 kg. The distance of the box pulled is 4 m. The pulling force is 20…

Q: While rearranging a dorm room, a student does 436 j of work in moving a desk 1.6 m. What was the…

A: Amount of work done by the student, W = 436J displacement of the object, d = 1.6m Horizontal force…

Q: How much work is done by the force of gravity in moving a 10 kg block from an initial height of 2 m…

A: Given:mass of block, m = 10 kginital height, hi = 2 mfinal height, hf = 10 macceleration due to…

Q: .How much work is done in lifting a 2-kg ball 0.5m high? Express your answer in a) joules and b)…

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Q: Calculate the work done when a force of 5 N moves a book 1.2 m. (Remember that 1 N?m 5 1 J.)

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Q: Answer the following and explain it in simple words 1. Why is more work done in climbing a hill…

A: Work done is change in energy or force times displacement. 1. While walking on level road , there is…

Q: Explorers in the jungle find an ancient monument in the shape of a large isosceles triangle as…

A: Volume of the monument, V = ½  Area× × thickness V =½ ×  (Width × height) × thickness V =½ × 64.8 ×…

Q: In the figure shown, if the mass (m-9 Kg) is moving with constant speed and traveled a distance d=16…

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Q: How much work is required to throw a ball with a mass of 0.27 kg 30.4 m/s? Assume the ball starts…

A: Work done = change in K.E Work done = (K.E)f -(K.E)i                   = 1/2mvf2-1/2mvi2…

Q: A 213 kg crate slides 7.6 m until coming to a stop after being pushed by a large man. The effective…

A: Given data: Mass (m) = 213 kg Displacement (d) = 7.6 m Coefficient of kinetic friction (μk) = 0.37…

Q: A 50 kg box is pushed at constant speed up an incline for a distance of 15 m by a force parallel to…

A: Write a given values of this question. m=50kgd=15mθ=37∘μ=0.25

Q: Matthew pushes a box of toys along a 5 m long ramp that is inclined 3 m high as shown in the figure…

A: Work done is defined as the product of the applied force and the displacement in the direction of…

Q: How far must a 50 N force need to push an object to do 10 J of work? Your answer: 0.2 m 5 m 40 m 60…

A: Here given a force of 50 N. The workdone is 10 J.We have to calculate the distance covered by that…

Q: If I am holding a rock and it weighs 10N, and I carry the rock 10 m to the right, how much work did…

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

Q: How much work is done by a table as it holds up a 3.8 kg cat? O OJ O 3.8J O 37J O The answer depends…

A: Given Mass m of cat = 3.8 kg gravitation acceleration g = 9.8 m/s2

Q: frictional forces in slowing a 1,645-kg car from 10.1 m/s to rest? Calculate to one

A: Work done = change in kinetic energy  W = ∆K  W = 1/2 m v2  Given m= 1645 kg  V final = 10.1 m/s  V…

Q: If gravity is pulling a 0.15 kg ball down 2.0 meters, what is the magnitude of the force doing work…

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Q: How much work is done by a powerlifter that pushes a car with a force of 800N at a distance of 200 m

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Q: A smart car rolling at 2.59m/s must come to a stop in a parking spot. How much work must be done by…

A: Write the work-energy equation. Here, m is the mass, vf is the final velocity, and vi is the…

Q: It takes 3 s for 25 g car to go down a 100 incline for 1 m. ? How much work was done by friction?…

A: Given : Time, t = 3 s mass of car, m = 25 g  = 25*10-3 kg Inclination angle, θ = 100 Distance,x = 1…

Q: What is the equation for horizontal work?   Rogelio pushes a book 3 m across the table. If he uses…

A: Work done = force × displacement

Q: How much work is done by a table as it holds up a 3.8 kg cat? Your answer: O OJ 3.8 J 37 J The…

A: The work done to hold up a cat on the table is the potential energy due to the gravitational force.…

Q: You push your much-loved 3-kg physics book 0.83 m along a horizontal table top with a horizontal…

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Q: A chain 72 meters long whose mass is 27 kilograms is hanging over the edge of a tall building and…

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Q: Calculate the work done by a 2.4 N force pushing a 400 g sandwich across a table 0.75 m wide.

A:

Q: Hulk grabs Ultron and drags him 8.2 km while pulling a force of 27N force. How much work did Hulk…

A: Displacement is S = 8.2 km  Force is F = 27 N

Q: A body of mass 20 kg is lifted up through a height of 4 m. How much work is done? (take g = 9.81…

A: Given data,                    Mass, m = 20 kg                   height lifted, h = 4 m         Only…

Q: A chain 63 meters long whose mass is 28 kilograms is hanging over te edge of a tall building and…

A:

Q: How much work did the movers do (horizontally) pushing a 46.0-kg crate 10.6 m across a rough floor…

A: Given- Mass of crate (m) = 46 Kg Distance (d) = 10.6 m Coefficient of friction (μ) = 0.50

Q: A barrel has a mass of 70 kg, and the height of the dock is 1.2 m. How much work do you do when…

A: Work done(w) = force*displacement                    w = F*r                    From Newton's laws…

Q: You push your much-loved 3-kg physics book 1.25 m along a horizontal table top with a horizontal…

A:

Q: A one-dimensional force has the form F(x) = A x2-Bx where A =1.8 N/m2 and B = 0.65 N/m. How much…

A: We have a one-dimensional force which is given by  F(x)=Ax2-Bx  where constants A=1.8 N/m2 and…

Q: In the figure shown, if the mass (m-6 Kg) is moving with constant speed and traveled a distance…

A:

Q: how much work does Ryan to dom to lift a 2.0 x 101 Kg bag of potatoes to his shoulder, 1.7 m above…

A: Given Mass of the bag m = 2.0 x 101 kg Height h = 1.7 m

Q: How much work does a 52-kg woman do against gravity when climbing from the bottom to the top of a…

A: Given: Mass of the woman, m =  52-kg. Height of the staircase, h = 2.8 m.   To Find: The work done.

Q: Suppose that 6J of work is needed to stretch a spring from its natural length of 28 cm to a length…

A: We know,         W = 12kx2        Here x is the elongation in the spring. Given,       W = 6 J…

Q: Mama Mia has a mass of 65kg and is carrying a tray of turkey with a total weight of 55N .if she…

A: Mama Mia is moving in a horizontal direction (I think with no acceleration).Force acting on Mama Mia…

Q: a weight lifter holds a 50kg weight a distance of 3m above the ground for 30 seconds.How much work…

A: Weight lifter makes an angle 900(perpendicular) with gravity, Work done (W) = Fd cos900…

Q: You push your much-loved 3-kg physics book 1.29 m along a horizontal table top with a horizontal…

A: Given Data Displacement of the book is d=1.29 m Horizontal force on the book is F=2.72 N Frictional…

Q: A chain lying on the ground is 15 m long and its mass is 100 kg. How much work is required to raise…

A: Given: Length of the chair = 15m Mass = 100 kg g=9.8 m/s2

Q: 8.1. What is the work done by a force of 20 N acting through a parallel distance of 8 m? What force…

A: The work done by a force is   W=Fd      =(20 N)(8 m)=160 J

Q: A man pushes a lawn mower on a level lawn with a force of 185 N. If 35% of this force is directed…

A: Given data: Force = 185 N Force in forward direction = 35% of 185 N Displacement in forward…

Proper Length

The theory of special relativity explains the connection between space and time to objects that move in a straight line at a constant speed. The objects move at the speed of light. When an object approaches light speed, its mass is endless and cannot move faster than light. The most crucial postulate of Einstein's special relativity is that the laws of nature do not change in each frame of reference.