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Q1. Under the influence of its drive force, a snowmobile is moving at a constant velocity along a horizontal patch of snow. When the drive force is shut off, the snowmobile coasts to a halt. The snowmobile and its rider have a mass of 135 kg. Under the influence of a drive force of 203 N, it is moving at a constant velocity whose magnitude is 5.60m/s. The drive force is then shut off. Find (a) distance in which the snowmobile coasts to a halt and (b) time required to do so.
Q2. Comment at length on the statement. "The space around a wire with a current in it is empty." That is, does magnetic field occupy space?
A typical Major League fastball is thrown at about 99 mph and with a spin rate of 103 rpm. If the distance between the pitcher's point of release and the catcher's glove is exactly 65.5 ft, how many full turns does the ball make between release and c..
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