00:01
Half life in seconds, constant time from days, 3 .82 days.
00:08
First days convert to hours.
00:11
In one day we have 24 hours.
00:16
And in one hour we have 60 minutes and one minute we have 60 seconds.
00:30
In solving, the answer is 30 ,00048 seconds.
00:34
Next, for the decay constant, this is the decay constant.
00:37
This is call nula and then of 2 over the half life so a lot of 2 over the half life of 90 30 ,0 .48 seconds and then you can hardly gain constant is reported that a certain point 1 10 to negative 6 per second next convert 3 .44 microcuries to bairoel so so 0 .44 microtifuri is times 10 is a negative 6 theories and the conversion factor of curies to be correct is this in one theory we have 3 .7 and spin was 10.
01:16
And the answer is 16 ,000 ,000.
01:20
We should give that correct answer.
01:25
Next, the number of new play given an activity of 2 .44 quries, but the formula for activity states.
01:37
So the number of new play is a positive...