Why do dust particles stay suspended in the gas?

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SUMMARY

Dust particles remain suspended in gas due to constant bombardment by free-moving gas molecules, which counteracts the force of gravity. This results in a net force of zero acting on the dust particles. The phenomenon is further explained by Brownian motion, where the random movement of particles contributes to their suspension in the gas. This explanation aligns with established principles of physics regarding particle dynamics in fluids.

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nyrychvantel
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A diagram shows many very small dust particles suspended in the gas in a closed transparent glass.

Question: Explain why dust particles stay suspended in the gas and do not fall to the bottom of the syringe.

My answer:
Dust particles are constantly being bombarded by free moving gas molecules in the glass that causes it to counteract the force of gravity. Therefore, the dust particles stay suspended because the resultant force acting on the dust particle is zero.

Am I correct in explaining this phenomenon? Please correct me.
Thanks!
 
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That sounds good and just like the gas molecules the dust particles will be moving randomly(Brownian motion)
 

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