a person runs along a circular trackof radius r meters in 10 seconds then average velocity of entire journey
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The total number of waves produced in one second is called the frequency of the wave. The number of vibrations counted per second is called frequency. Here is a simple example: If five complete waves are produced in one second then the frequency of the waves will be 5 hertz (Hz) or 5 cycles per second.
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200 second I think this i's the answer
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