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.
W=.5*8E-3*(12*sin(1000*5E-3+2.5))^2
W=.5*8E-3*(12*sin(1000*5E-3+2.5))^2
Natural Language
Math Input
Extended Keyboard