A 150-lb. person climbs a rope at constant velocity of 2.00 ft./s in a period of time of 10.0 s. (a) How much power does the person expend? (b) How much work is done?
A 150-lb. person climbs a rope at constant velocity of 2.00 ft./s in a period of time of 10.0 s. (a) How much power does the person expend? (b) How much work is done?
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Transcribed Image Text:7.3
Power
3. A 150-lb. person climbs a rope at constant velocity of 2.00 ft./s in a period of time of 10.0 s.
(a) How much power does the person expend? (b) How much work is done?
4. A consumer's electric bill indicates that they have used a total of 793 kwh of electricity for a
30-day period. Express this energy in (a) joules and (b) ft. Ib. (c) What is the average power
used per hour?
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