Review. A 30.0-g metal ball having net charge Q 5 5.00 mC
Chapter 29, Problem 20(choose chapter or problem)
Review. A 30.0-g metal ball having net charge Q 5 5.00 mC is thrown out of a window horizontally north at a speed v 5 20.0 m/s. The window is at a height h 5 20.0 m above the ground. A uniform, horizontal magnetic field of magnitude B 5 0.010 0 T is perpendicular to the plane of the balls trajectory and directed toward the west. (a) Assuming the ball follows the same trajectory as it would in the absence of the magnetic field, find the magnetic force acting on the ball just before it hits the ground. (b) Based on the result of part (a), is it justified for three-significant-digit precision to assume the trajectory is unaffected by the magnetic field? Explain.
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