The lightbulb in the circuit has a resistance of 22 22 and consumes 5.0 W of power, the rod is 1.25 m long and moves to the left with a constant speed of 3.1 m/s. What is the strength of the magnetic field?

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Q: Problem 5 Show that, not matter what A and B are, À- (1 x B) = 0.

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A: mass of box = m = 10 kg co efficient of friction = 0.7 acceleration = a = 6 m/s2

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