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Re: Stop using calories?

An insulated liter container with 0.09 kg of water is shaken
by rapidly raising and then lowering the container 1 meter.
Assume that all of the motion energy raises the temperature
of the water 0.5 K.

What would be the minimum number of shakes required?

The answer is "one" if you permit the use of a very strong container.
What is "motion energy"?

Leigh