Complete Question
The complete question is shown on the first uploaded image (reference for Photobucket )
Answer:
The electric field is 
Explanation:
From the question we are told that
The linear charge density on the inner conductor is 
The linear charge density on the outer conductor is

The position of interest is r = 37.3 mm =0.0373 m
Now this position we are considering is within the outer conductor so the electric field at this point is due to the inner conductor (This is because the charges on the conductor a taken to be on the surface of the conductor according to Gauss Law )
Generally according to Gauss Law

=> 
substituting values


The negative sign tell us that the direction of the electric field is radially inwards
=> 
Answer:
The answer is B.
Explanation:
I meant B. not C so sorry
Answer:
I believe its Nuclear Energy
Explanation:
N:nuclear
E:energy
Answer:
9 seconds
Explanation:


cross multiplying

it will take 9secs for the car to go from 0 to 45 km/ h