Answer:
(a) 11.3 T
(b) 6.09 T
Explanation:
Current, I = 14 kA = 14000 A
number of turns, N = 900
inner radius, r = 0.7 m
outer radius, R = 1.3 m
The magnetic field due to a circular coil is given by

(a) The magnetic field due to the inner radius is

(b) The magnetic field due to the outer radius is

You are at rest with respect to the car.
You are in motion with respect to the School.
Answer:
Systems always tend toward a state of decreasing order unless more energy is provided into the system to counteract this tendency.