Calculate the power of an electric pump that pumps water out of the well while doing work of 16 J in 20 s.

These tasks: A (operation of the pump used when pumping out water) = 16 J; t (pump running time) = 20 s.

The power of the electric pump used can be determined by the formula: N = A / t.

Let’s calculate: N = 16/20 = 0.8 W.

Answer: The electric pump used has a power of 0.8 W.

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