medicalchanel Posted August 5, 2015 Report Share Posted August 5, 2015 I've seen the formula A=Ao(1/2)^(t/h) given for half life and I forgot how to solve for t! Any ideas? If you guys have any other better ways for half life problems please post below! thanks! Link to comment Share on other sites More sharing options...
ConnorOrange Posted August 11, 2015 Report Share Posted August 11, 2015 Hey, did you just try to google, lol? Apart from that, Wolfram Alpha is free and really good for anything related to ''finding some solutions to some equation" type of thing. Link to comment Share on other sites More sharing options...
DoctorAM Posted August 17, 2015 Report Share Posted August 17, 2015 I've seen the formula A=Ao(1/2)^(t/h) given for half life and I forgot how to solve for t! Any ideas? If you guys have any other better ways for half life problems please post below! thanks! Might have been easier to google, but hey why not I assume you're given all other variables? If so, first divide both sides by Ao, You'll be left with A/Ao=(0.5)^t/h Now, apply the natural logarithm (ln on your calculator), to both sides of your equation. You'll now have ln(A/Ao)=(t/h)(ln0.5) Now, divide (ln0.5) from both sides of the equation. you'll be left with N=t/h (where N = [ln(A/Ao)]/ln(0.5)]) Now multiply both sides by h. voila, you have time, t. Link to comment Share on other sites More sharing options...
RichardDegrasseSagan Posted August 18, 2015 Report Share Posted August 18, 2015 I very much doubt that there will be any natural log calculations on the MCAT. It would probably be much higher yield to calculate the various variables using shortcuts. Use the equation for qualitative purposes. Link to comment Share on other sites More sharing options...
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