Answer
$5 MHz$
Work Step by Step
Speed = wavelength X frequency
$1500=3 \times10^{-4}\times f$
$f=5MHz$
Hence, to remove the particles, the ultrasonic bath needs to be operated at 5 MHz.
College Physics (7th Edition)
by Wilson, Jerry D.; Buffa, Anthony J.; Lou, Bo
Published by
Pearson
ISBN 10:
0-32160-183-1
ISBN 13:
978-0-32160-183-4
Chapter 14 - Sound - Learning Path Questions and Exercises - Exercises - Page 523: 8
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