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A metal rod slides at a constant 65 m/s over frictionless rails separated by 34 cm, as shown in the figure above. A 0.85-T
uniform magnetic field is directed out of the page. Assume the resistance of the rod is 2 Q and that the rails have negligible
resistance. Find :
a) the current flowing in the rails;
9.39
A counterclockwise
b) the magnetic force acting on the rod;
2.787
N to the right
c) the mechanical power needed to keep the rod moving at constant speed;
186.55
W
d) the electrical power dissipated.
176.3
W
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