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Explain why a balloon filled with air cannot float in the middle of a room without moving downwards but a helium balloon of the same size can?
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Aug 19, 2018
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Explain why a balloon filled with air cannot float in the middle of a room without moving downwards but a helium balloon of the same size can?
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TomFirth
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Helium is less dense than normal air
DelusionaL
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Aug 25, 2018
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