For a research project, a student needs a solenoid that produces an interior magnetic field of 0.0400 t. she decides to use a current of 1.00 a and a wire 0.500 mm in diameter. she winds the solenoid in layers on an insulating form 1.00 cm in diameter and 13.0 cm long. determine the number of layers of wire needed. (round your answer up to the nearest integer.)

n = 16

Explanation:

given,

magnetic field = 0.04 T

current = 1 A

diameter of wire = 0.5 mm

length of solenoid = 13 cm = 0.13 m

number of layers = ?

we know,

Magnetic field = permeability x turn density x current

where n is the number  of layer

N = L/d

n = 15.91 = 16 (approx)

number of layers is equal to 16

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me