3. The distance of a galaxy from the earth is 5.6 x 1025 m.
Assuming the speed of light to be 3 x 108 m s-1
find the time taken by light to travel this distance.
Distance travelled
[Hint : Time taken =
speed
help me
Answers
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6
Answer:
17.7 sec
Explanation:
distance = 5.6×1025
speed = 3×108
time = distance/speed
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