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# Frequency of EM Waves

SATPHY-YNKMGC

What is the frequency of electromagnetic waves in a vacuum that have the same wavelength as a $500.0\ Hz$ sound wave moving at $345\ m/s$?

A

$500.0 \ Hz$

B

$0.690\ Hz$

C

$2.30 \times { 10 }^{ -9\ }Hz$

D

$1.45\ Hz$

E

$4.35\times { 10 }^{ 8\ }Hz$