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Physics, 03.11.2020 18:10 leeplott4747
Why does a balloon filled with helium rise while a balloon filled with an equal volume of average atmospheric air does not?
A. Helium has no mass, but air does.
B. Helium increases the balloon's mass more than air.
C. Helium has a higher density than air.
D. Helium has a lower density than air.
Answer- D
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