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A RADAR sends a signal to an aeroplane at a distance 300 km away, with a speed of 3×108 m s−1. After how much time is the signal received back after reflecting from the aeroplane? |
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Answer» A RADAR sends a signal to an aeroplane at a distance 300 km away, with a speed of 3×108 m s−1. After how much time is the signal received back after reflecting from the aeroplane? |
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