Earth is 9.3×107 miles from the sun. The speed of light, c, is about 1.86×105 miles per second. Use the equation, t=d⁄c, to find how many seconds,t, it takes light to travel from the sun to the Earth.
[ 9.3 x 10^7 ] / [ 1.86 x 10^5] =
5 x 10^2 =
5 x 100 = 500 seconds { 8 min 20 seconds }
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