Lesson: Calculating Wave Motion Physics • 9th Grade
In this lesson, we will learn how to use the wave speed formula, s = fλ, to calculate the movement of waves of different frequencies and wavelengths.
Sample Question Videos
Which of the following formulas correctly shows the relation between the frequency, the speed, and the wavelength of a wave?
A pier stretches from the coastline out into the sea a distance of 180 m. Waves on the sea move past the pier as they head toward the shore. The distance between the crests of the waves is 15 m, and the wave crests travel from the end of the pier to the shore in 24 seconds. What is the frequency of the waves?
A sound wave in a particular object propagates at 960 m/s and has a frequency of 8,000 Hz. What is the wavelength of the sound wave in that object?