Answer:
18.6012339739 A
Explanation:
= Vacuum permeability = 
L = Length of wire = 55 cm
N = Number of turns = 4000
I = Current
Magnetic field is given by

The current necessary to produce this field is 18.6012339739 A
<span>a thin fibrous cartilage between the surfaces of some joints, e.g., the knee.</span>
That it is a good one and bad one that's what I think hope it helps!:)
Air can go in any direction. . .
Light travels as transverse waves and can go through the vacuum of space, while sound has longitude waves and needs to travel through something solid. It can’t travel through a vacuum of space like light.