"Where would the scale tip? On the left is a steel ball, on the right a ping-pong ball," Reddit user Veiy wrote, posing the conundrum. "I think the scale would raise to the right since the [buoyancy] ...
Dr. Rod Cross, an avid tennis fan who earned his PhD in plasma physics from Sydney University, co-authored the book Technical Tennis: Racquets, Strings, Balls, Courts, Spin and Bounce with ...
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