Which of the following is correct / True? O A. The kinetic energy of a system must always be positive or zero. O B. The potential energy of a system can be negative , positive or zero because its value is relative to a defined point. O C.A non-conservative force is , a force that takes energy away from the system that can't be recovered if we were to reverse the action. O D. All are True O E. All are False

Which of the following is correct / True? O A. The kinetic energy of a system must always be positive or zero. O B. The potential energy of a system can be negative , positive or zero because its value is relative to a defined point. O C.A non-conservative force is , a force that takes energy away from the system that can't be recovered if we were to reverse the action. O D. All are True O E. All are False

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.

Question

Which of the following is correct / True?
A. The kinetic energy of a system must always be positive or zero.
B. The potential energy of a system can be negative , positive or zero because its value is relative to a defined point.
C.A non-conservative force is , a force that takes energy away from the system that can't be recovered if we were to reverse the action.
D. All are True
All are False

How much work is done by a boy pulling his sister 30.0 m in a wagon if he applied 50 N force at angle of 30 degree with horizontal to pull the rope that is
attached with the Wagon? Assume no friction acts on the wagon.
ОА. 1.3КJ
В. 1.8KJ
C. 2.5 KJ
D. 1.5KJ
E. None of the above.

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