They should be bigger as if it is hot the tracks will expand as it is made of metal and then there is more room for it to expand or contract
Each electron has a charge of

In this problem, the total charge is

Therefore, the number of electrons contained in this total charge will be given by the total charge divided by the charge of a single electron:

<h2>The different forces acting on the ball while its in air</h2>
Amy throws a softball through the air. Applied, drag and gravitational forces are acting on the ball while it’s in the air. The softball experiences force as a result of Amy’s throw. As the ball moves, it experiences from the air it passes through.
It also experiences a downward pull because earth has the property to attract everything which is on the earth towards it. The ball is moving in the air but earth applies force on the ball to get back on the ground. Hence, in this way, gravitational force applies.
There is also a drag force which results due to friction that is present in the air. It resist to move ball in the air and there will also be applied force which is given by a person who throws by applying force.
1 and A
2 and B
3 and D
4 and C