A superconducting gravity meter can measure changes in
Chapter , Problem 41(choose chapter or problem)
A superconducting gravity meter can measure changes in gravity on the order (a) You are hiding behind a tree holding the meter, and your 80-kg friend approaches the tree from the other side. How close to you can your friend come before the meter detects a change in g due to his presence? (b) You are in a hot air balloon and are using the gravity meter to determine the rate of ascent (assume the balloon has constant acceleration). What is the smallest change in altitude that results in a detectable change in the gravitational field of Earth?
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