In some of these problems you may need to know that the mass of an electron is 9.1 X 10-31 kg and the charge is -1.6 X 10-19 C.
Electrostatic interactions; Explanations for electrostatic interactions; Conductors and nonconductors (dielectrics)
Lightning A cloud has a large positive charge. Assume that this is the only cloud in the sky over Earth and that Earth is a good electrical conductor. Draw a sketch showing electric charge distribution on Earth due to the cloud’s electric charge. Explain why a person’s hair might stand on end before a lightning strike.
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