Answer:
Im so so sorry but I do now know how to do this
Explanation:
When a wire is made shorter, the resistance decreases.
When a wire is made thinner, the resistance increases.
Answer:

Explanation:
To answer the question, we just need to consider the motion along the horizontal direction.
The component of the initial velocity of the ice skater along the x-direction is:

where u = 2.25 m/s is the initial velocity and
is the angle.
The component of the final velocity of the ice skater along the x-direction is

where u = 4.65 m/s is the final velocity and
is the angle.
The acceleration along the x-direction is given by

where
t = 120 s is the time
Substituting,
