Physics, 20.04.2020 22:12 lazarovalle3598
A source of emf is connected by wires to a resistor, and electrons flow in the circuit. The wire diameter is the same throughout the circuit. Compared to the drift speed of the electrons before entering the source of emf, the drift speed of the electrons after leaving the source of emf is .A. faster. B. slower. C. the same. D. either A or B depending on circumstances. E. any of A, B, or C depending on circumstances.
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The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.
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During a car accident, a 125kg driver is moving at 31m/s and in 1.5s is brought to rest by an inflating air bag. what is the magnitude of the change in momentum to the driver
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A source of emf is connected by wires to a resistor, and electrons flow in the circuit. The wire dia...
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