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A cylindrical disk has volume 8.9810-3 m3 and mass 7.98 kg. The disk is floating on the surface of some water with its flat surfaces horizontal. The area of each flat surface is 0.636 m2.
a) What is the specific gravity of the disk?
b) How far below the water level is its bottom surface? in cm!
c) How far above the water level is its top surface? in cm!
Suppose there is an astronaut who is traveling at a significant fraction of the speed of light. How long does it take according to the astronaut in years
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