Please convert 88 count / 4 minutes to ??? counts / 30 sec Note**Remember; if pe

Question

Please convert 88 count / 4 minutes to ??? counts / 30 sec

Note**Remember; if per unit time is 30 seconds for # of counts, then background per unit time must also be 30 seconds.

This is based off of a physics lab of half life of barium, the values provided came with lab

½Ao = Ao e- t 1/2

                                    ln (½) = -lambda t1/2                        (ln ½ = - ln 2)

t1/2 = ln 2 / lambda

t1/2 = 0.693 / lambda

½Ao = Ao e- t 1/2

                                    ln (½) = -lambda t1/2                        (ln ½ = - ln 2)

t1/2 = ln 2 / lambda

t1/2 = 0.693 / lambda

Explanation / Answer

1 minute =60 seconds

=>1 minute =2 (30 seconds)

so for 4 minutes we have 8 (30 seconds)

88 counts/4 minutes =88/8=11 counts/30 sec

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