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.
Doppler shift for sound at source frequency 100 kHz for 70 mph
Doppler shift for sound at source frequency 100 kHz for 70 mph
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random