a radar signal is beamed towards a planet and its echo is received 10 minutes later. If the distance between the planet and the earth is 6.3 × 10^10 m. Calculate the speed of the signal?
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Answer:
Speed of signal = 7 × 10^10 m/s.
Explanation:
Given, Time = 10 minutes = (10 × 60) seconds
Distance = 6.3 × 10^10 m
We know that, Distance = Speed × Time
Thus, Speed = Distance / Time
= (6.3 × 10^10) ÷ (10 × 60)
= (63 × 10^10) ÷ (10 × 60 × 10)
= (7 × 10^10) ÷ (10 × 10 × 10)
= 7 × 10^7 m/s.
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