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1. |
What is the force required (in Newtons) to hold a spherical balloon stationary in water at a depth of H from the air-water iterface? The balloon is of radius 0.1 m and is filled with air. |
A. | πg/3 |
B. | .01πgH/4 |
C. | .01πgH/8 |
D. | .04πgH/3 |
Answer» B. .01πgH/4 | |