SOLUTION: The speed of light is approximately 3 × 10^5 km/s and the average distance between Pluto and the Sun is about 5.9 × 10^9 km. How long does it take for light from the Sun to reach

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Question 1025802: The speed of light is approximately 3 × 10^5 km/s and the average distance between Pluto and the
Sun is about 5.9 × 10^9 km. How long does it take for light from the Sun to reach Pluto? Give your
answer correct to the nearest minute.
Please explain answer. Thanks
Found 2 solutions by Alan3354, josgarithmetic:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
The speed of light is approximately 3 × 10^5 km/s and the average distance between Pluto and the
Sun is about 5.9 × 10^9 km. How long does it take for light from the Sun to reach Pluto? Give your
answer correct to the nearest minute.
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d = r*t
t = d/r = 5.9e9/3e5 seconds
= 1.96666e4/60 minutes
=~ 328 minutes

Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
5.9%2A10%5E9%2Akm%281%2F%283%2A10%5E5%29%29%28s%2F%28km%29%29%281%2F60%29%28minute%2Fs%29

%28%285.9%2A10%5E9%29%2F%283%2A60%2A10%5E5%29%29minutes

%285.9%2A10%5E4%29%2F%28180%29

%285.9%2A10%5E4%29%2F%281.8%2A10%5E2%29

%285.9%2F1.8%29%2A10%5E2%2Aminutes

3.278%2A10%5E2%2Aminutes

The given data only allows ONE significant figure, so the proper value to report for answer IS highlight%283%2A10%5E2%2Aminutes%29. You might want to try giving the result as 300%2Aminutes.