Asked by cherry
If only 50% of the original amount of a radioisotope remains,
half the time has gone by
after twice that time there will be nothing left
the radioactivity has reached a safe level
a half-life has passed
half the time has gone by
after twice that time there will be nothing left
the radioactivity has reached a safe level
a half-life has passed
Answers
Answered by
oobleck
D
better review what a half-life is.
better review what a half-life is.
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