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# Echo Distance

APPH12-WIXYXK

A yodeler shouts a $1400 \text{ Hz}$ note, which echoes off of nearby cliff wall, and the yodeler hears the note echoed back after $4 \text{ s}$.

If sound is traveling through the air at $350\text{ m/s}$, how far is the yodeler from the cliff wall?

A

$4 \text{ meters}$

B

$175 \text{ meters}$

C

$700 \text{ meters}$

D

$1400 \text{ meters}$