Mathematics, 04.08.2019 11:00 noobieplayerxd
6. the speed of sound is approximately 1.2 × 103 km/h. how long does it take for sound to travel 7.2 × 102 km? write your answer in minutes.
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6. the speed of sound is approximately 1.2 × 103 km/h. how long does it take for sound to travel 7.2...
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