If 1.50×1020 electrons flow through a cross section of a 4.43 mm diameter silver wire in 7.15 s, then what is the drift speed of the electrons? (the density of conduction electrons in silver is n = 5.80×1028 1/m3.)

photocells convert light energy to electricity

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.

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the force represented by vector a is normal force. if the hockey puck is moving to the right, when it is hit with a significant force by the hockey stick the puck will move off in a different direction. correct on edge.