The magnetic field inside a superconducting solenoid is 4.50 t. the solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. determine (a) the magnetic energy density in the field and (b) the energy stored in the magnetic field within the solenoid.

(a)

(b)

Explanation:

(a) The magnetic energy density in the field is given by:

  ( 1 )

B: magnitude of the magnetic field

μo: magnetic permeability of vacuum = 4pi*10^-7 T/A

you replace the values of B and μo in the equation (1):

(b) The energy stored in the magnetic field of the solenoid:

 ( 2 )

V: volume of the solenoid

Next, you replace V in the equation (2). Furthermore, you can use the result obtained in (a) for u_B:

0.863333

86%

hope this

that would be because of both gravity and friction. so     c