A speaker emits a sound wave through a metallic block, with a speed of 0.42 km/s, and a frequency of 16kHz. Calculate the wavelength to 3.s.f. Describe the characteristics of a longitudinal wave.

Firstly the values should be converted into more comfortable units. 0.42km/s = 420m/s, and 16kHz = 16,000Hz. Next, use the equation wavelength = speed/frequency This gives wavelength = 420m/s over 16,000/s = 0.02625, which gives 0.0263m, to 3.s.f. In longitudinal waves, particles propagate (travel) in the same direction as the wave. Longitudinal waves create areas of high and low density, called compressions and rarefactions respectively.

JB
Answered by Joseph B. Physics tutor

3893 Views

See similar Physics GCSE tutors

Related Physics GCSE answers

All answers ▸

What is an example of a natural satellite?


How to remember what is Ideal Gas Law?


Explain why the velocity of a car moving at a constant speed around a bend changes.


If 10 N is required to move an object 2m, what is the work done?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning