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.
t=(4.5*10^9*ln(1+(5*10^(-6)*238)/(22.4*8*0.3*10^(-6))))/(ln 2)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random