WHomework set 1_solns_2011

WHomework set - Webassign Homework set 1 Problems 1 4 10 11 13 14 Solutions 15.1 Since the charges have opposite signs the force is one of

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Webassign Homework set # 1 Problems: 1, 4, 10, 11, 13, 14 Solutions: 15.1 Since the charges have opposite signs, the force is one of attraction . Its magnitude is     99 2 12 9 8 2 22 4.5 10 C 2.8 10 C Nm 8.99 10 1.1 10 N C 3.2 m e kqq F r       15.4 The attractive forces exerted on the positive charge by the negative charges are shown in the sketch and have magnitudes 1 2 23 2 and 2 2 ee e kq FF F aa a 2 2 cos45 0.707 1.35 2 e x FFF a   and 2 13 2 sin45 0.707 1.35 2 e y F a  2 2 2 2 1.91 e Rxy a     and 11 tan tan 1 45 y x F F so 2 2 1.91 along the diagonal toward the negative charge e R a F 
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15.10 The forces are as shown in the sketch at the right.     66 2 9 12 1 2 22 -2 12 6.00 10 C 1.50 10 C Nm 8.99 10 89.9 N C 3.00 10 m e kqq F r          2 13 9 2 2 -2 13 6.00 10 C 2.00 10 C 43.2 N C 5.00 10 m e kq q F r   
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This note was uploaded on 05/12/2011 for the course PHYS 1112 taught by Professor Seaton during the Spring '08 term at University of Georgia Athens.

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WHomework set - Webassign Homework set 1 Problems 1 4 10 11 13 14 Solutions 15.1 Since the charges have opposite signs the force is one of

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