ch21_p16 - 16. (a) For the net force to be in the +x...

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16. (a) For the net force to be in the + x direction, the y components of the individual forces must cancel. The angle of the force exerted by the q 1 = 40 µ C charge on 3 20 qC = is 45°, and the angle of force exerted on q 3 by Q is at – θ where = F H G I K J tan . . .. 1 20 30 337 Therefore, cancellation of y components requires () ( ) 13 3 22 || sin 45 sin 0.02 2 (0.030) (0.020) qq Q q kk °= + from which we obtain | Q | = 83 C. Charge Q is “pulling” on
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This note was uploaded on 09/06/2009 for the course PHYSICS 14358 taught by Professor Bolton during the Spring '09 term at Kansas State University.

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