A rock is dropped into an abandoned mine and a splash is
A rock is dropped into an abandoned mine and a splash is heard 6 s later. Assuming that it takes a negligible time for the sound to travel up the mine shaft, determine the depth of the shaft and how fast the rock was falling when it hit the water.
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a hare and a tortoise compete in a race over a straight course 180 km long the tortoise crawls at a speed of 0190 ms
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a rock is dropped into an abandoned mine and a splash is heard 6 s later assuming that it takes a negligible time for
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a converging lens of focal length 8490 cm is 198 cm to the left of a diverging lens of focal length -583 cm a coin is
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