problem24_52

University Physics with Modern Physics with Mastering Physics (11th Edition)

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24.52: a) System acts like two capacitors in series so ( 29 1 1 1 eq 2 1 - + = C C C ( 29 . 2 1 2 1 2 so 2 0 2 2 2 2 2 0 eq 2 0 2 1 2 0 L ε d Q Q C Q U d L ε C d L ε C C d L ε = = = = = = b) After rearranging, the E fields should be calculated. Use superposition recalling A ε Q E 0 2 = for a single plate (not A ε Q 0 since charge Q is only on one face). between 1 and 3: 2 0 4 2 0 2 2 0 3 2 0 1 2 0 2 2 2 2 L ε Q L ε Q L ε Q L ε Q L ε Q E = + + - = between 3 and 2: 2 0 4 2 0 2 2 0 3 2 0 1 2 0 2 2 2 2 2 L ε Q L ε Q L ε Q L ε Q L ε Q E = + + + = between 2 and 4: 2 0 4 2 0 2 2 0 3 2 0 1 2 0 2 2 2 2 L ε Q L ε Q L ε Q L ε Q L ε Q E = +
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Unformatted text preview: - + = 2 2 2 2 2 2 new 2 2 2 4 2 2 4 2 2 4 2 2 2 2 new 2 3 3 4 2 1 2 1 L d Q L d Q L d Q U U U L d Q d L L Q L Q L Q d L E U =-=-= = + + = = This is the work required to rearrange the plates....
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This document was uploaded on 04/20/2008.

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