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23-02-2018
Physics

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Why does a helium balloon float in air?
A. Helium is denser than air.
B. Helium is less dense than air.
C. The helium is under pressure in the balloon.

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ileepig1p3164i ileepig1p3164i

23-02-2018

less dense. like in water. things less dense then it float.

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