Two spherical shells have a common center. the inner shell has radius r1 = 5.00 cm and charge q1 = +4.00×10−6 c; the outer shell has radius r2 = 15.0 cm and charge q2 = −6.00×10−6 c. both charges are spread uniformly over the shell surface. take v = 0 at a large distance from the shells. a) what is the electric potential due to the two shells at the distance r = 2.50 cm from their common center.
b) what is the electric potential due to the two shells at the distance r = 10.0 cm from their common center.
c) what is the electric potential due to the two shells at the distance r = 20.0 cm from their common center.

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:

explanation:

considering the bohr theory, the type of connection that requires the transfer the answer conuldn't be right

answer; how far out of place which the object finished relative to the starting location;

it would be c. predictability