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24 July, 07:01

A balloon is released from a tall building. the total mass of the balloon including the enclosed gas is 2.0 kg. its volume is 5.0 m3. the density of air is 1.3 kg/m3. will the balloon rise, fall, or remain stationary; and why?

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  1. 24 July, 08:22
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    Given:

    m = 2.0 kg, mass of the balloon and enclosed gas

    V = 5.0 m³, volume of balloon.

    Calculate the effective density of the balloon.

    ρ = m/V

    = 2/5

    = 0.4 kg/m³

    The density of air is 1.3 kg/m³, which is denser than the balloon. Therefore the balloon will rise.

    Answer: The balloon will rise because its density is less than that of air.
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