how many collisions occur each year?

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how many collisions occur each year?

2007-09-14 08:21:03 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics

3 answers

Here's a guess, based on just collisions between air molecules in earth's atmosphere:
10^18 kg
10^25 molecules/kg
10^3 collisions/second/molecule
10^7 seconds/year

comes to about 10^53 collisions per year

Make a similar calculation for water molecules and you'll have a pretty good estimate.

2007-09-14 18:31:25 · answer #1 · answered by Frank N 7 · 0⤊ 0⤋

103, 324 in the US.......

..

2007-09-14 15:33:52 · answer #2 · answered by muddypuppyuk 5 · 0⤊ 0⤋

depends where...

2007-09-14 16:41:23 · answer #3 · answered by Anonymous · 0⤊ 1⤋