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OpenStudy (anonymous):
an aluminum sphere with radius of 0.25cm has a mass of 0.125gram. is the sphere solid or does it have bubbles within it? if it is not solid, how much mass is missing on it? I need Help
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OpenStudy (anonymous):
The expected mass is the density of aluminum [look it up] times the volume of the sphere, (4/3) pi r^3. If it weighs less, there are bubbles.
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