I feel admiration and respect for them, and I feel grateful and humble.
Answer:
(a). The change in the protons electric potential is 0.639 kV.
(b). The change in the potential energy of the proton is 
(c). The work done on the proton is
.
Explanation:
Given that,
Speed 
Initial potential V=100 V
Final potential = 150 V
(a). We need to calculate the change in the protons electric potential
Potential energy of the proton is

Using conservation of energy


![]\dfrac{1}{2}mv_{i}^2-]\dfrac{1}{2}mv_{f}^2=e(V_{f}-V_{i})](https://tex.z-dn.net/?f=%5D%5Cdfrac%7B1%7D%7B2%7Dmv_%7Bi%7D%5E2-%5D%5Cdfrac%7B1%7D%7B2%7Dmv_%7Bf%7D%5E2%3De%28V_%7Bf%7D-V_%7Bi%7D%29)
![\dfrac{1}{2}mv_{i}^2-]\dfrac{1}{2}mv_{f}^2=e\Delta V](https://tex.z-dn.net/?f=%5Cdfrac%7B1%7D%7B2%7Dmv_%7Bi%7D%5E2-%5D%5Cdfrac%7B1%7D%7B2%7Dmv_%7Bf%7D%5E2%3De%5CDelta%20V)

Put the value into the formula


(b). We need to calculate the change in the potential energy of the proton
Using formula of potential energy

Put the value into the formula


(c). We need to calculate the work done on the proton
Using formula of work done




Hence, (a). The change in the protons electric potential is 0.639 kV.
(b). The change in the potential energy of the proton is 
(c). The work done on the proton is
.
We could take the easy way out and just say
(110 kW) x (3 hours) = 330 kilowatt hours .
But that's cheap, and hardly worth even 5 points.
If we want to talk energy, let's use the actual scientific unit of energy.
________________________________________________
" 110 kw " means 110,000 watts = 110,000 joules/second .
(3 hours) x (3600 sec/hour) = 10,800 seconds.
(110,000 joules/second) x (10,800 seconds) = 1.188 x 10⁹ Joules
That's
==> 1,188,000,000 joules
==> 1,188,000 kilojoules
==> 1,188 megajoules
==> 1.188 gigajoules
Atsa nawfulotta energy !
It goes back to that "110 kw appliance" that we started with.
That's no common ordinary household appliance. 110 kw is something like
147 horsepower. In order to bring 110 kw into your house, you'd need to
take 458 Amperes through the 240-volt line from the pole. Most houses
are limited to 100 or 200 Amperes, tops. And the TRANSFORMER on
the pole, that supplies the whole neighborhood, is probably a 50 kw unit.