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Physics Mechanics problems 28 through 54

See attached for mechanic questions.

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28.) q = C*V = 2 * 100 = 200 micro Coul. Ans (D)

29.) U = 1/2 CV^2 = 0.5 * 2* 15 *10^(-6) * 20 *20 = 6000 micro J : actually Answer (D) should be 6000 micro Joule or 6 mJ

30.) C = A*epsilon/d = 0.2 * 8.86 * 10^(-12)/10^(-3) = 1.8 * 10^(-9) F
= Ans (C)

31.) 1/C = 1/C1 + 1/C2
=> C = (C1 * C2)/(C1+C2)
if C1 = C2=> C = C1/2 = 10/2 = 5 micro F : Ans (C)

32.) Ans (A) : charge

33.) i =q/t = 0.47/0.2 = ...

Solution Summary

The solution provides the workings and the answers to the problems.

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