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OpenStudy (anonymous):
A speed of 60 mph is equal to 88 per second. if sound travels at a speed of 1,100 ft per sec what is the speed of sound in miles
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OpenStudy (anonymous):
is that 88 ft / sec ?
OpenStudy (anonymous):
yes
OpenStudy (anonymous):
do dimensional analysis.
OpenStudy (anonymous):
(1100 ft/s)(60s/hr)(1 mile/5280 ft)... cross out the units, answer should come out : 125 mph
OpenStudy (anonymous):
nvm that can't be right hold on though.
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OpenStudy (anonymous):
found it. 3600 s in an hour not 60. duh.
OpenStudy (anonymous):
(1100 ft/s)(3600s/hr)(1 mile/5280 ft)=750 mph
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