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12 September, 07:34

The speed of light is approximately 5 1.86*10 miles per second. if the planet pluto is 9 3.67 * 10 miles from the sun, how long does it take light from the sun to reach pluto? express your answer using scientific notation.

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  1. 12 September, 07:44
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    Time = distance/speed, as you surely know. About the scientific notation, you just need to express the result as a number with one digit and the rest in decimal places with 10^ ... I can't see the exponents in your question and it's late here. Good luck! For instance, 6.434*10^3 ... I recall it takes about 5 hours, so you should get there, so about 5 * 3600 = 18000 seconds. Nice!
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