As the length of a wire increases, the resistance a. increases.
b. decreases.
c. remains the same.
d. disappears.

a. increases

Explanation:

the law says

R=ρ

R= resistance

ρ= permiability of wire

L= length of the wire

A= area of the wire

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge