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Lightning Flash In a given lightning flash, the potential difference between a cloud and the ground...

Lightning Flash In a given lightning flash, the potential difference between a cloud and the ground is 3.9 ? 109 V and the quantity of charge transferred is 39 C.

(a) What is the decrease in energy of that transferred charge? ____GJ

(b) If all that energy could be used to accelerate a 1000 kg automobile from rest, what would be the automobile's final speed? ____m/s

(c) If the energy could be used to melt ice, how much ice would it melt at 0°C? The heat of fusion of ice is 3.33 ? 105 J/kg.

____kg

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