Question 514416
How long does it take a jet engine traveling 1.6 x 10^7 kilometer per second to travel 5.3 x 10^14 kilometers? 
:
Time = distance/speed
:
t = {{{(5.3(10^14))/(1.6(10^7))}}} = {{{3.31(10^(14-7))}}} = {{{3.31(10^7)}}} seconds
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:
If the circumference of a very small circle is 2.35 x 10^-12 meter, then what is the diameter of the circle?
{{{pi*d}}} = {{{2.35(10^-12)}}}
:
d = {{{2.35(10^-12)/pi}}}
:
divide pi into 2.35
d = {{{.7353(10^-12)}}} = {{{7.35(10^-13)}}}