why gravitational force not act on the gases
Answers
Answer:
The size of the pull depends on the masses of the objects. ... The gravitational force between the Earth and the molecules of gas in the atmosphere is strong enough to hold the atmosphere close to our surface. Smaller planets, that have less mass, may not be able to hold an atmosphere.
Explanation:
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Answer:
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Explanation:
It does have an effect on gases, which is why our planet has an atmosphere.
Everything has mass, so everything is subject to gravity - including hydrogen and helium. Balloons filled with those gases float due to density, just as wood or poystyrene floats on water, or copper on mercury.
The mass of gas- its gramme molecular weight at the surface is reached with (from memory) 22.5 litres. Nitrogen is 14, oxygen is 16 grammes, so air is about 14.4gms/22,5 litres.