Posted by **miyuki** 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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