I mean since air is a gas and dust is a solid, albeit it a low-mass solid, it's got to be denser than the comparable volume it displaces in the surrounding air.
2007-03-18 05:52:37 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Physics
not density related. force of particles stricking the dust is enough to provide the random brownian motion. or at any rate in some cases match the force of weight for the dust - creating balanced forces and keeping the dust floating.
i suppose that dust in a cold room would not float as readily as in a warm or hot room
2007-03-18 05:59:24 · answer #1 · answered by pat_arab 3 · 1⤊ 0⤋
Why doesn't the water walker or water skater sink into the pond? Same reason because of water density. Air also has a density and its this density that airplanes sail on with the birds and also thermals in the air help lift things into the air. Your bodies also creates lifting thermals in the air. Later.
2007-03-18 06:08:11 · answer #2 · answered by Anonymous · 0⤊ 0⤋
not necessarily. dust can have a smaller density tan the air it is in. also, electric charges have a part to play with such small particles
2007-03-18 05:56:23 · answer #3 · answered by blakdragon 4 · 0⤊ 0⤋
Because it thinks that it is better than everything else.
2007-03-18 05:56:15 · answer #4 · answered by WangDangSweetPoontang 4 · 0⤊ 0⤋