When i stand halfway between two speakers, with one on my left and one on my right, a musical note from the speakers gives me constructive interference. how far to my left should i move to obtain destructive interference?

B. Half a wavelength

Explanation:

When i stand halfway between two speakers, with one on my left and one on my right, a musical note from the speakers gives me constructive interference. how far to my left should i move to obtain destructive interference?

a. One-fourth of a wavelength

b. Half a wavelength

c. One wavelength

d. One and half a wavelengths

e. Two wavelengths

Destructive interference occurs when the right speaker is half a wavelength further away than the left. Let "d" represents distance from each speaker to the me, the listener. To achieve destructive interference, I would have to calculate the distance in terms of wavelength as thus:

(d + wavelength/4) - (d - wavelength/4) = half a wavelength/4

Put in a different term, the path difference must be half a wavelength. Whatever that amount is, you can achieve this path difference by moving half that amount.

8 meters above the spring

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it