Which of the following is made up of vibrating electric and magnetic fields
2 answers:
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Answer:
Explanation:
To find the amplitude of the sound, we must first determine the wavelength and the phase difference between the two speakers.
For the wavelength;
Recall that, the separation between two successive max. and min. intensity points are
Thus; for both speakers; the wavelength of the sound is:
λ = 80 cm
The relation between the path difference(Δx) and the phase difference(Δ∅) is:
where;
Δx = 10 cm
λ = 80 cm
Δ∅ = π rad
∴
Suppose both speakers are placed side-by-side, then the path difference between the two speakers is: Δx = 0 cm
Thus, we have:
∴
The amplitude of the sound wave if the two speakers are placed side-by-side is:
A = 0.765a