ch21-p052 - 52. (a) Eq. 21-11 (in absolute value) gives n=...

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52. (a) Eq. 21-11 (in absolute value) gives n q e == × × 200 10 160 10 125 10 6 19 13 . . .. C C electrons (b) Since you have the excess electrons (and electrons are lighter and more mobile than protons) then the electrons “leap” from you to the faucet instead of protons moving from the faucet to you (in the process of neutralizing your body). (c) Unlike charges attract, and the faucet (which is grounded and is able to gain or lose any number of electrons due to its contact with Earth’s large reservoir of mobile charges) becomes positively charged, especially in the region closest to your (negatively charged) hand, just before the spark. (d) The cat is positively charged (before the spark), and by the reasoning given in part (b)
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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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