Question

A person measures the depth of a well by measuring the time interval between dropping a stone
and receiving the sound of impact with the bottom of the well. The error in his measurement of time
IS ST = 0.01s and he measures the depth of the will to be L = 20m. Take the acceleration due to
gravity g -10 ms? and the velocity of sound is 300 ms. Then the fractional error in the
measurement is closest to
1 .1%
2. 5%
(3) 3%
(4) 0.2%​

Answer 1

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