Two loudspeakers facing each other are separated by 1.00 m and are excited in phase by a 1,100 Hz sine wave. Where will be the points on a line between speakers where there will be constructive interference, and where will be the points where there will be destructive interference

Condition of constructive interference is given as

x = 95 cm, 80 cm, 65 cm, 50 cm, 35 cm, 20 cm, 5 cm

condition of destructive interference we know that

x = 87.5 cm, 72.5 cm, 57.5 cm, 42.5 cm, 27.5 cm, 12.5 cm

Explanation:

As we know that the frequency of the sound waves is 1100 Hz

now we can find the wavelength as

now we have

now we know for the condition of constructive interference

Path difference = N

x = 95 cm, 80 cm, 65 cm, 50 cm, 35 cm, 20 cm, 5 cm

Similarly for condition of destructive interference we know that

Path difference = (2N + 1)

so we have

x = 87.5 cm, 72.5 cm, 57.5 cm, 42.5 cm, 27.5 cm, 12.5 cm

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia