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The figure shows a U-shaped conducting rail that is oriented vertically in a horizontal magnetic field B. The rail has no electric resistance and does not move. A slide wire with mass m and resistance R can slide up and down without friction while maintaining electrical contact with the rail. The slide wire is released from rest.
Part A
Show that the slide wire reaches a terminal speed vterm Part B
Determine the value of a terminal velocity vterm if l = 22cm , m= 9.0g ,R = 0.10 , and B = 0.53T
vterm= _______________ m/s
Sagot :
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