Asked by Mary

saturn is approximately 1.4 x10^9 kilometers from the Sun. If light travels at approximately 3.0 x 10^5 kilometers per second, how long does it take light from the Sun to reach Saturn? Express your answer in scientific notation.
Answered by drwls
Divide the separation distance by the speed of light, using scientific notation.

We will be glad to critique your work, if necessary.
Answered by bobpursley
We will be happy to check your work or thinking.


time=distance/speed
Answered by Mary
I divided 1.4 x 10^9/3.0 x10^5=
4.7 x 10^4 sec
Answered by drwls
Try again. You got the exponent wrong
Answered by Mary
answer=4.7 x10^3
Answered by Mary
I thought you take 10^9-5 or 10^4 is the exponent
Answered by drwls
0.47*10^4 = 4.7*10^3
Answered by Mary
I understand now. When i divided it gave me .047. Thank you for your help.
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