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(Jimmy of the Clue Crew tries to crack a whip.) Like a jet plane traveling faster than mach 1, a whip makes a cracking noise because it's traveling faster than the speed of this |
sound
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$1,200 |
DJ |
SCIENCE |
2009-07-13 |
#5736 |
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At sea level at 70 degrees this travels 1,129 feet per second; it speeds up over 1 foot per sec. for each rising degree |
sound
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$400 |
DJ |
SCIENCE |
2006-02-06 |
#4931 |
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The SO in SONAR stands for this word |
Sound
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$100 |
J |
SCIENCE |
1998-10-27 |
#3252 |
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At sea level the speed of this is 332 meters per second |
sound
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$400 |
DJ |
SCIENCE |
1988-11-01 |
#957 |
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In air, its speed is about 330 meters per second |
sound
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$400 |
DJ |
PHYSICAL SCIENCE |
1986-04-02 |
#408 |