If the frequency of the motion of a simple harmonic oscillator is doubled, by what factor does the maximum speed of the oscillator change?
A) 2
B) 4
C) It does not change.
D) 1/2
E) 1/4
A
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A conducting hollow cylinder (inner radius = a, outer radius = b) carries a current of 40 A that is uniformly distributed over the cross section of the conductor. If a = 3.0 mm and b = 6.0 mm, what is the magnitude of the (line) integral 
around a circular path (radius = 5.0 mm) centered on the axis of the cylinder and in a plane perpendicular to that axis?
A. 50 ?T ? m B. 30 ?T ? m C. 22 ?T ? m D. 37 ?T ? m E. 47 ?T ? m
A fluid has a density of 1 040 kg/m3 . If it rises to a height of 1.60 cm in a 1.50-mm diameter capillary tube, what is the surface tension of the liquid? Assume a contact angle of zero
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