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21 January, 17:15

A water reservoir contains 108 metric tons of water at an average elevation of 84 m. The maximum amount of electric energy that can be generated from this water is: 8 kwh, 16 kwh, 1630 kwh, 16300 kwh or 58800 kwh.

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  1. 21 January, 19:07
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    24.72 kwh

    Explanation:

    Electric energy=potential energy=mgz where m is mass, g is acceleration due to gravity and z is the elevation.

    Substituting the given values while taking g as 9.81 and dividing by 3600 to convert to per hour we obtain

    PE = (108*9.81*84) / 3600=24.72 kWh
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