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OpenStudy (skullcandy229):
A train traveling 80 kph is blowing its horn as it approaches a railroad crossing. The horn has a frequency of 300 Hz. Assume the speed of sound is 331 m/sec. What is the observed frequency of the horn? (Round to the nearest whole number.)
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OpenStudy (skullcandy229):
350 302 395 322 are one of these right
OpenStudy (fantageplayer):
wow i have no idea at all
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