Two small speakers A and B are driven in step at 745 Hz by the same audio oscillator. These speakers both start out 4.50 m from the listener, but speaker A is slowly moved away. (See the figure (Figure 1)). The speed of sound in air is 344 m/s.
At what distance d will the sound from the speakers first produce destructive interference at the location of the listener?
If A keeps moving, at what distance d will the speakers next produce destructive interference at the listener?
After A starts moving away, at what distance will the speakers first produce constructive interference at the listener?Physics9 months ago
The portion of string between the bridge and upper end of the fingerboard (the part of the string that is free to vibrate) of a certain musical instrument is 60.0 cm long and has a mass of 2.00 g . The string sounds an A4 note (440 Hz ) when played.Where must the player put a finger (at what distance x from the bridge) to play a D5 note (587 Hz )? (See the figure (Figure 1)) For both notes, the string vibrates in its fundamental mode.
I'm pretty certain you use f=nv/2L, but I just don't know what n is. When I tried 1 because it said fundamental, I got the wrong answer. I used to v=lambda*f , is that not correct to find velocity?1 AnswerPhysics9 months ago
An omnidirectional loudspeaker produces sound waves uniformly in all directions. The total power received by a sphere of radius 3.00 m centered on the speaker is 320 W. A sphere of radius 6.00 m will receive a total power of
A sphere of radius 6.00 will receive a total power of
80.0 W.1 AnswerPhysics9 months ago