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An average person can produce considerable power output for short periods of time. However, over an...

An average person can produce considerable power output for short periods of time. However, over an entire 8-hour workday, a person might be able to average 1/10 hp output of physical power. If energy is valued at $0.12/kWh (about the average cost of electricity from a public utility), what is the monetary value of a person's physical work per day?

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Answer #1

Power output = 0.1 hp = 74.6 watts ( 1hp = 746 watts approx.)

energy delivered in 8 hrs = 74.6 x 8 = 596.8 Wh = 0.597 kWh

cost 1kWh = 0.12 $

monetary value of the physical work = 0.597 x 0.12 = 0.072 $

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