5. According to the law of conservation of energy, the total amount of energy in the universea.remains constantc. increasesd. decreasesb. changes constantly6. A device that does work with only one movement and changes the size or direction of a force is a(n)_a. compound machineb. effort machineс.screwd. simple machine7. The amount by which a machine multiplies an effort force is called thea. efficiency factorb. fulcrumc. mechanical advantaged. resistance force8. A machine that has the same output force as the input force has a mechanical advantage ofс. 5d. 1a.100b. 109. The unit of power is thea. jouleb. wattс. m/sd. second10. Machines make tasks easier by changing either the magnitude or the direction of thea. forceb. workneeded.c. energyd. velocity1/6>

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Answered: 5. According to the law of conservation…

5. According to the law of conservation of energy, the total amount of energy in the universe c. increases d. decreases a. remains constant b. changes constantly

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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Question

5. According to the law of conservation of energy, the total amount of energy in the universe
a.
remains constant
c. increases
d. decreases
b. changes constantly
6. A device that does work with only one movement and changes the size or direction of a force is a(n)_
a. compound machine
b. effort machine
с.
screw
d. simple machine
7. The amount by which a machine multiplies an effort force is called the
a. efficiency factor
b. fulcrum
c. mechanical advantage
d. resistance force
8. A machine that has the same output force as the input force has a mechanical advantage of
с. 5
d. 1
a.
100
b. 10
9. The unit of power is the
a. joule
b. watt
с. m/s
d. second
10. Machines make tasks easier by changing either the magnitude or the direction of the
a. force
b. work
needed.
c. energy
d. velocity
1/6
>

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