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# Problem: When running on its 11.4 V battery, a laptop computer uses 8.3 W. The computer can run on battery power for 8.0 h before the battery is depleted.a) What is the current delivered by the battery to the computer?b) How much energy, in joules, is this battery capable of supplying?c) How high off the ground could a 75 kg person be raised using the energy from this battery?

###### FREE Expert Solution

Electric Power:

$\overline{){\mathbf{P}}{\mathbf{=}}{\mathbf{i}}{\mathbf{V}}}$

The energy supplied by the battery:

$\overline{){\mathbf{E}}{\mathbf{=}}{\mathbf{P}}{\mathbf{t}}}$

Potential energy:

$\overline{){\mathbf{U}}{\mathbf{=}}{\mathbf{E}}{\mathbf{=}}{\mathbf{m}}{\mathbf{g}}{\mathbf{h}}}$

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###### Problem Details

When running on its 11.4 V battery, a laptop computer uses 8.3 W. The computer can run on battery power for 8.0 h before the battery is depleted.

a) What is the current delivered by the battery to the computer?

b) How much energy, in joules, is this battery capable of supplying?

c) How high off the ground could a 75 kg person be raised using the energy from this battery?