Two loudspeakers both emit sounds with a frequency of 340Hz. Both sounds have equal amplitude and phase. The amplitude is A. The speakers are 4m apart and face each other. (The speed of sound in air is 340ms-1)
a) What is the wavelength of the sound?
0.5m
1m
1.5m
2m
b) Ignoring the reduction of amplitude with distance from each speaker, what is the amplitude of the sound;
i) halfway between the speakers?
0
1 A
2 A
3.142 A
ii) 0.5m from either speaker?
0
1 A
2 A
3.142 A
iii) 1m from either speaker?
0
1 A
2 A
3.142 A
