Determine the average velocity symbolically
An athlete swims a length L of a pool in a time t1 and makes the return trip to the starting position in a time t2. If she is swimming initially in the positive x-direction, determine the average velocity symbolically in the first half of the swim.
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An athlete swims a length L of a pool in a time t1 and makes the return trip to the starting position in a time t2. If she is swimming initially in the positive x-direction, determine the average velocity symbolically in the first half of the swim
Lead shot is formed by dropping molten lead through the center of a high tower. The frictional resistance of the air as the lead falls down the tower helps to form the spherically shaped "shot" and to cool the lead.
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A 10-ft steel beam is lowered by means of two cables A & B distant of 9-ft, unwinding at the same speed from overhead cranes. As the beam approaches the ground, the crane operators apply brakes to slow down the unwinding motion.
A wave with frequency 2000Hz,and wavelength 0.1m (in some certain medium), what is its speed in this medium?
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