Math
posted by David on .
Find the halflife (in hours) of a radioactive substance that is reduced by 10 percent in 5 hours.

.6=e^.603 (5sec/th)
solve for thalflife.
ln.6=.693*5/th
th=???
posted by David on .
Find the halflife (in hours) of a radioactive substance that is reduced by 10 percent in 5 hours.
.6=e^.603 (5sec/th)
solve for thalflife.
ln.6=.693*5/th
th=???