The electric field everywhere on the surface of a thin, spherical shell of radius 0.745 m is of magnitude 897 n/c and points radially toward the center of the sphere.
(a) what is the net charge within the sphere's surface? nc
(b) what is the distribution of the charge inside the spherical shell?
1. the negative charge has a spherically symmetric charge distribution.
2. the positive charge has a spherically symmetric charge distribution.
3. the positive charge has an asymmetric charge distribution.
4. the negative charge has an asymmetric charge distribution.

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

compass can be used day and night, cloudy or sunny