Ch21-p057 - 57 The mass of an electron is m = 9.11 1031 kg so the number of electrons in a collection with total mass M = 75.0 kg is n= M 75.0 kg =

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57. The mass of an electron is m = 9.11 × 10 –31 kg, so the number of electrons in a collection with total mass M = 75.0 kg is 31 31 75.0kg 8.23 10 electrons. 9.11 10
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.

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