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Posted by on Wednesday, December 12, 2012 at 11:11pm.

A rain cloud contains 2.72 × 10^7
kg of water vapor.
The acceleration of gravity is 9.81 m/s^2.
How long would it take for a 3.79 kW pump
to raise the same amount of water to the
cloud’s altitude of 1.85 km?
Answer in units of s

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