Question

The speed of light in a vacuum is 3.00 × 108 m/s. Enter your answer in scientific notation. (a) What is its speed in km/h? What is its speed in mi/min?

Answer 1

a is 1.08x10^9. the first person to answer was wrong :(

Step-by-step explanation:

Answer 2

(a) The speed in Km/hr is,
`10.8* 10^8Km/hr`

(b) The speed in mi/min is,
`1.125* 10^7mi/min`

Solution :

The speed of light =
`3* 10^8m/s`

(a) Convert speed of light from m/s to Km/hr

`(3* 10^8m/s)* (3600)/(1000)=10.8* 10^8Km/hr`

conversions used :

(1 Km = 1000 m)

(1 hr = 3600 sec)

(b) Convert speed of light from m/s to mi/min

`(3* 10^8m/s)* (60)/(1600)=1.125* 10^7mi/min`

conversions used :

`(1m=(1)/(1609.34)mile)\\\\(1sec=(1)/(60)min)`