Give example of something we think of as work in everyday circumstances that is not work in the scientific sence

Q: 3. A 5 kg block is initially at rest on a horizontal frictionless surface. Two forces, F = (4 – x2)i…

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Q: A student in a lab exerts a force of 25 N on an angle to pull a block by a distance of 48 cm. If a…

A: Given data :- Force F = 25 N Displacement d = 48 cm = 0.48 m Work done W = 11 J

Q: When Skylab reentered the Earth's atmosphere on July 11, 1979, it broke into a myriad of pieces. One…

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Q: 3. See the figure below. If a 3 kg mass is moved up the first frictionless incline and the same 3 kg…

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Q: 20. A small ball is dropped from a height which gives it a gravitational potential energy of 100 J.…

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Q: Part A You pick up a 2.5 kg can of paint from the ground and lift it to a height of 1.3 mi How much…

A: The 2.5 kg can of paint has a weight given as F=mgF=2.5×9.8F=24.5 N This weight of the can is the…

Q: 2. A spring on a horizontal surface can be stretched and held 0.5 meters from its equilibrium…

A: Given: The stretching in the spring due to force 50 N is 0.5 m from the equilibrium.

Q: 1. Draw a situation where a force is doing zero work. Explain why the force is doing no work,…

A: To explain a situation where work done by a force is zero.

Q: Calculate the work done from x=0.0 to x = 7.0 m by the one-dimensional force depicted in the…

A: Note:- The area under the force-displacement graph gives the work done.Given- the graph of one…

Q: Can work ever be negative? Group of answer choices Yes. If the force and displacement have opposite…

A: According to question we need to find--- work done ?

Q: A 10 kg package is delivered to your house. Use one complete sentence to describe an example of how…

A: SOlution: expain the work done on the book

Q: Describe a situation where an object is in motion but no physical work is being accomplished.…

A: Consider the situation where a person carrying a suitcase on his head and walking. Now for an…

Q: Two people of the same mass climb the same set of stairs. Person A climbs the stairs in 25 s. Person…

A: Let mass of each person = m Weight of each person = mg Time taken by A to climb the set of stairs =…

Q: 12. Consider the following situation: A car is moving with a high speed at the bottom of a hill…

A: Assuming that at bottom of hill potential energy is zero. Initially when car age at bottom of hill…

Q: . Can a normal force on an object ever do work on the object? Explain.

A: The work done by an object is given as :   Work = Force × displacementW  = Fdcosθ

Q: d in terms of magnitudes, so it is never negative.

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Q: 4. Identify a case where an object is moving over a surface with friction, but the frictional force…

A: The frictional force is the force that acts between the surface of contacts between two objects.…