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Physics, 03.01.2020 12:31 live4dramaoy0yf9

An electric field greater than about 3×106v/m causes air to break down (electrons are removed from the atoms and then recombine, emitting light). if you shuffle along a carpet and then reach for a doorknob, a spark flies across a gap you estimate to be 1mm between your finger and the doorknob.

estimate the voltage between your finger and the doorknob.

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