Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
(mass of earth's atmosphere) / (density of air * 1000 miles per hour * 10 meters * 10 meters)
(mass of earth's atmosphere) / (density of air * 1000 miles per hour * 10 meters * 10 meters)
Natural Language
Math Input
Extended Keyboard