Answer :
(a) The speed in Km/hr is, [tex]10.8\times 10^8Km/hr[/tex]
(b) The speed in mi/min is, [tex]1.125\times 10^7mi/min[/tex]
Solution :
The speed of light = [tex]3\times 10^8m/s[/tex]
(a) Convert speed of light from m/s to Km/hr
[tex](3\times 10^8m/s)\times \frac{3600}{1000}=10.8\times 10^8Km/hr[/tex]
conversions used :
(1 Km = 1000 m)
(1 hr = 3600 sec)
(b) Convert speed of light from m/s to mi/min
[tex](3\times 10^8m/s)\times \frac{60}{1600}=1.125\times 10^7mi/min[/tex]
conversions used :
[tex](1m=\frac{1}{1609.34}mile)\\\\(1sec=\frac{1}{60}min)[/tex]
