Working with the diffraction angle of sound and its relation to frequency.

(a) When sound emerges from a loudspeaker, is the diffraction angle determined by the wavelength, the diameter of the speaker, or a combination of these two factors? (b) How is the wavelength of a sound related to its frequency?

Constructive and destructive interference of sound wave

Speakers A and B are vibrating in phase. They are directly facing each other, are 7.80 m apart, and are each playing a 73.0-Hz tone. The speed of sound is 343 m/s. On the line between the speakers there are three points where constructive interference occurs. What are the distance of these three points from speaker A?

Diffraction of sound

A 1500-Hz sound and a 8500-Hz sound each emerge from a loudspeaker through a circular opening whose diameter is 0.30 m. Assuming that the speed of sound in air is 343 m/s, find the diffraction angle θ for each sound

Working with instantaneous velocity and position.

The position of a particle moving on an x axis is given by: x= 7.8 + 9.2t - 2.1t^3 with x in meters and t in seconds. What is its velocity at t=3.5 s? Is velocity constant or changing?

The Speed of a Wave

A 0.75 m string is stretched so the tension is 2.3N. A transverse wave with a frequency of 150 Hz and a wavelength of 0.40 m travels on the string. What is the mass of the string?