Which of the following statements about energy is not true? a.The mechanical energy of a physical system is constant when the forces acting on the system are all conservative forces. b.The total energy of the universe is always conserved. c.According to the work-energy theorem, the forces that contribute to the net work include all the conservative and nonconservative forces. d.Mechanical energy is always conserved e.Energy can change form, but it cannot be created or destroyed.

The mechanical energy of a physical system is constant when the forces acting on the system are all…

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Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter8: Conservation Of Energy

Section: Chapter Questions

Problem 8.10CQ: In Chapter 7, the work-kinetic energy theorem, W = K, was introduced. This equation states that work...

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Which of the following statements about energy is not true?

	a.	The mechanical energy of a physical system is constant when the forces acting on the system are all conservative forces.
	b.	The total energy of the universe is always conserved.
	c.	According to the work-energy theorem, the forces that contribute to the net work include all the conservative and nonconservative forces.
	d.	Mechanical energy is always conserved
	e.	Energy can change form, but it cannot be created or destroyed.

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