Answer
(a) $1~jiffy=3.3357\times10^{-11}~s$
(b) $1~min=1.7987\times10^{12}~jiffy$
Work Step by Step
(a) $1~cm=0.01~m$
$time = \frac{distance}{speed}$. So:
$1~jiffy=\frac{0.01~m}{2.9979\times10^{8}~m/s}=3.3357\times10^{-11}~s$
Notice that, 1 cm is an exact number, not a measure of some distance. So, in this case, there are as many significant figures as we want. But, the given speed of light has five significant figures.
(b) $1~min=60~s$
$1~min=(1~min)(\frac{60~s}{1~min})(\frac{1~jiffy}{3.3357\times10^{-11}~s})=1.7987\times10^{12}~jiffy$
