The speed of sound waves in air is found to be 340 m/s. Determine the fundamental frequency (1st harmonic) of an open-end air column that has a length of 67.5 cm.

Four friends, a, b, c, and d are standing varying distances away from a speaker which is producing sound waves.

Which property is expressed in distance units? o a. period o b. wavelength o c. speed o d. frequency

Answer on edg: what happens to the light coming from the sun? - scattering what happens to light on the surface of water? - specular reflection what happens to light on the surfaces of rocks? - diffuse reflection