5. A body 'P' contains 50 electrons and 45
protons
and a body 'Q' contains 72 electrons and 77 protons after
electrification by friction between the bodies. Find
the number of electrons and protons in 'P' and 'Q”
before electrification. Also find the number of elec-
trons transferred between them?
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sorry I do not now the answer
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