Answer : When a person applies force and covers distance then the person is doing work on an object.
Answer with Explanation:
We are given that
Magnetic field,B=

Length of wire,l=15 m
Current,I=19 A
a.We have to find the magnitude of magnetic force and direction of magnetic force.
Magnetic force,F=
Using the formula


Direction=

15 degree above the horizontal in the northward direction.
Answer:
8.3
Explanation:
thats what i think sorry if its wrong im ok at doing this stuff