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Science/Math question?
The question is-
The speed of light is 3 x 10(to the 8th) m/sec. How long does it take light to travel the 149 x 10(to the 9th) m distance from the sun to the Earth?
Please show your work or explain how to do it.
8 Answers
- Rakesh DubeyLv 61 decade agoFavorite Answer
We know that Time = Distance / Speed
Time taken = (149 x 10^9)/ 3 x 10^8
=> 496.7 seconds
=> 8.3 minutes
- doc89891Lv 41 decade ago
Its about 8 minutes or 480 seconds. To find out divide the distance by the speed of light
- Henrik PLv 41 decade ago
Per 1 second light travels 3x10^8 m
X sec 149x10^9
X=1490x10^8/3x10^8= 497sec.
or divide by 60= about 8.28 min. or
8min 5 sec
- 1 decade ago
1 sec = 3 x 10(pow8) meters
? Sec = 149 x 10(pow 9) meters = 1490 x 10 (pow 8)
Cross Multiplying, we get ->
? sec = 1490 x 10 pow(8) / (3 x 10 pow(8) )
= 1490 / 3
= 496.67 seconds
And that's your answer.
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- lhvinnyLv 71 decade ago
Distance equals rate times time.
d = r * t
149x10^9 = 3x10^8 * t
t = 149x10^9 / 3x10^8
t = 496 seconds = 8 minutes and 16 seconds
- Mr. PeabodyLv 71 decade ago
149000000000 / 300000000
1490 / 3
496 1/3 seconds
(1490 / 3) / 60
1490 / 180
149 / 18
8 5/18 minutes
~8.2722222 minutes
- Anonymous1 decade ago
distance/speed = (1490)/3 s
- starlighttLv 41 decade ago
sorry i dont know, i thought i did it but everyone elses answer is differant :(
