# Physics

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light travels at a constant speed of 3x10*11 cm/sec. how long does it take light to reach the earth a distance of 1.5x10*8 km. give the answers in seconds and minutes.

• Physics -

distance = 1.5 x 10^ 8 km
velocity of light = 300,000 kilometers per second
time = distance / velocity = (1.5 x 10^ 8 ) / 300 000 = 500 seconds =
8 minutes and 20 seconds ans.

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