ch24-p043 - Conservation of energy then leads to K f = 0.90...

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43. We apply conservation of energy for the particle with q = 7.5 × 10 6 C (which has zero initial kinetic energy): U 0 = K f + U f , where U = q Q 4 πε o r . (a) The initial value of r is 0.60 m and the final value is (0.6 + 0.4) m = 1.0 m (since the particles repel each other).
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Unformatted text preview: Conservation of energy, then, leads to K f = 0.90 J. (b) Now the particles attract each other so that the final value of r is 0.60 − 0.40 = 0.20 m. Use of energy conservation yields K f = 4.5 J in this case....
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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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