Steve hears a siren emitting a frequency of 10 khz when it is at rest. what frequency will steve hear if the siren moves toward him at 30 m/s? assume the speed of sound is 340 m/s. answer options are:
a.11 khz
b.10 khz
c. 0 khz
d. 9 khz

The frequency what Steve will hear is option a) f'≅ 11kHz

Explanation:

f= 10 kHz

v= 340 m/s

vf= 30 m/s

vo= 0

f'= f * (v/ v- vf)

f'=10.96 kHz ≅ 11 kHz

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods

answer is slate

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