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# A huge explosion is heard 78.5 miles away. How long does it

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A huge explosion is heard 78.5 miles away. How long does it take the sound to travel that far? Record your answer to the nearest whole second. No decimal places in your answer.

Hello, and thanks for the question.

Speed of sound =NNN-NN-NNNNmph

78.5 miles /NNN-NN-NNNNmph = 0.1031 hours

0.1031 * 60 = 6.18

Answer : 6 seconds

Hope this helps!

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