Quote (ChivasRegal @ 6 Jan 2019 06:20)
Most of our atmosphere (about 78%) is nitrogen. At 25 degrees Celsius (77 F), nitrogen molecules have an average velocity of about 511 m/s (1676 ft/s).
With every second, gravity is decelerating molecules by 9.8 m/s^2 (32.2 ft/s^2). So, we can calculate the height the molecule will reach. our initial velocity is 511 m/s (1676 ft/s) and our acceleration is -9.8 m/s^2 (-32.2 ft/s^2). That gives a height reached of 13,322.5 m (43,709 ft). Once our molecule reaches that height, its vertical velocity will be zero, and it will begin to fall.
The kinetic energy is proportional to the temperature of the gas. So, if our volume of gas is at a certain temperature, molecules with less mass must have greater (average) velocity to compensate. That tells us that molecules less massive than nitrogen have an average speed greater than the average speed of nitrogen. Hydrogen, for example, has an average speed of 1930 m/s (6,332 ft/s). Still not fast enough for the average molecule to escape, but a small amount will be moving fast enough to escape. And in fact we see that. About 95,000 tons of hydrogen manage to escape our atmosphere each year. That's only 0.00000000000017% of the Earth's supply of hydrogen.
I’ll wait for you to try and debunk this with a YouTube comment.
Gg t5t get rekt kid
This post was edited by IchBinDaddy on Jan 6 2019 08:15am