document.write( "Question 638457: the speed of sound is 760 k/m per hour if an aeroplane approches this speed and cross it we hare a loud blost why
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Algebra.Com's Answer #402226 by Alan3354(69443)\"\" \"About 
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the speed of sound is 760 k/m per hour if an aeroplane approches this speed and cross it we hare a loud blost why
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\n" ); document.write( "Look up \"sonic boom\" on google or wikipedia.\r
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