10. A person weighing 600 N gets on an elevator. The elevator lifts the person 6 m in 10 seconds. How much power was used? 1. How much time is needed to produce 720 Joules of work if 90 watts of power is used? 2. If 68 W of power is produced in 18 seconds, how much work is done? em well I A set of pulleys lifts an 800 N crate 4 meters in 7 seconds. What power was used?
10. A person weighing 600 N gets on an elevator. The elevator lifts the person 6 m in 10 seconds. How much power was used? 1. How much time is needed to produce 720 Joules of work if 90 watts of power is used? 2. If 68 W of power is produced in 18 seconds, how much work is done? em well I A set of pulleys lifts an 800 N crate 4 meters in 7 seconds. What power was used?
College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter7: Work, Energy, And Energy Resources
Section: Chapter Questions
Problem 51PE: Shoveling snow can be extremely taxing because the arms have such a low efficiency in this activity....
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