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9. Work & Energy / Power / Problem 4
Problem 4
Suppose there's a system where water is pumped to a rooftop tank 80 m above ground level. The water is pumped at a steady rate of 1.2
×
\times
×
10
5
kg/s for 12 hours. Calculate the total energy consumption, in kWh, needed to pump water to the rooftop tank.
A
1.13
×
\times
×
10
6
kW.h
B
7.85
×
\times
×
10
6
kW.h
C
94.1
×
\times
×
10
6
kW.h
D
7.85
×
\times
×
10
9
kW.h
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