PHYS208 Fundamentals of Physics II

Answer for Ch. 31, 29P

a) Please note the missing ln in the answer section of HRW.



Answer for Ch. 31, 35P

vt = mgR / B2L2

extension: 16.5 mm/s.

Answer for Ch. 31, 39P

a) Taking the time derivative of the expression below leads to an induced emf of 0.24 mV for the parameters stated in problem description.


b) The induced current is 0.60 mA clockwise.

c) Thermal power generated is 0.144 microW.

d) The external agent must apply a force of 28.7 nanoN.

e) Same power as part c).

Last updated April 16, 1998.
Copyright George Watson, Univ. of Delaware, 1997.