a supermarket helper uses 1000 calories during an 8 hour work day.Suppose he takes a 15...
a supermarket helper uses 1000 calories during an 8 hour work day.Suppose he takes a 15 minute break every three hours. Make some assumptions and calculate the power he delivers when he is working.
Homework Answers
here,
the total energy used , E = 1000 Cal
time taken , t = 8 h - 2 * 15 min
t = 7.5 h
the power delivered when he is working, P = E /t
P = 1000 /7.5 Cal/h
P = 133.3 Cal/h = 133.3 * 4.184 /3600 W
P = 0.15 W
the power delivered when he is working is 0.15 W
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