Ratio of the new to old wave speed for transverse waves
The tension in a wire clamped at both ends is doubled without appreciably changing its length. What is the ratio of the new to the old wave speed for transverse waves in this wire?
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A dynamite blast at a quarry launches a chunk of rock straight upward, and 1.6 s later it is rising at a speed of 20 m/s. Assuming air resistance has no effect on the rock, calculate its speed at (a) at launch and (b) 5.5 s after the launch.
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