Question

A balloon of volume 20m^(3) is filled with helium.It rises to a height of 180m in 30 sec starting from rest.The mass of balloon and equipment (excluding payload and helium) is 12kg .If density of air is 1.29kg/m^(3) and density of helium is 0.18kg/m^(3) and are constant find the mass of payload lifted by the balloon:

Answer 1

Answer:

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Explanation:

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