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Sound molecules can "stack up" in front of airplanes traveling at very high

speeds. This can cause which of the following?
A. Subsonic speeds
B. Fire
C. A combustion reaction
D. Sonic booms

2 Answers

2 votes
the answer is B.......
User AliRezza
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1 vote
The answer is C a combustion’s reaction
User Klanestro
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