Average speed equal to = ,total distance traveled/total time taken
so it would be = 94+84/8
= 22.25 kmph
Answer:
B'= 3.333 B
Explanation:
Lets take
Initial area = A
Magnetic field = B
The area after compression
A'=0.3 A
Magnetic field = B'
We know that flux ,Ф
Ф = B A
Given that flux is constant so
B A = B' A'
B A=B' x 0.3 A
B'= 3.333 B
It means that magnetic field will increase.
The distance between charged objects, the quantity of charge on them,
and the polarity of their charges, are the factors that determine the strength
and direction of the electrostatic force between the objects.
