Question

The speed of light in air is 3×10⁸ find the time taken for a light beam to travel a distance equal to the equatorial radius give your answer correct to three decimal places​

Answer 1

Answer:

$equatorial \: radius = 6.3785 \times {10}^{6} \\ \\ speed \: of \: light \: = 3 \times {10}^{8} \: metres \: per \: second \\ = (3 \times {10}^{8}) \div (6.3785 \times {10}^{6} ) \\ = 6378500 \div 300000000\\ = 0.021 \: seconds$

Step-by-step explanation:

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Answer 2

Answer:0.021 sec

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