Answer:
I think that's Newton's second law of motion
Explanation:
f = m(v-u)
________
t
since a = (v-u)t
f = ma
Answer:

Explanation:
As we know that loop is placed in YZ plane and magnetic field is along x direction
So here net force on the side of the loop which lies along Y axis is given as

here we know that on Y axis z = 0
so B = 0
so we have

now on the opposite side we have z = a
so magnetic field is given as

so force on that side is given as



so net force on the loop is given as


Answer:
(A) She needs to move the decimal point by 3 places