Solve the following questions-

Question 1- Two 2.30cm x 2.30cm plates that form a parallel-plate capacitor are charged to ± 0.706nC.

Part 1- What is the potential difference across the capacitor if the spacing between the plates is 0.900mm?

Part 2- What is the potential difference across the capacitor if the spacing between the plates is 2.30mm?

Question 2- The electric potential along the x-axis is V=100e?2x/mV, where x is in meters.

Part 1- What is Ex at x=1.0m?

Part 2- What is Ex at x=2.0m?

Question 3- Metal sphere 1 has a positive charge of 7.00nC . Metal sphere 2, which is twice the diameter of sphere 1, is initially uncharged. The spheres are then connected together by a long, thin metal wire. What are the final charges on each sphere?

-Sphere 1?

-Sphere 2?

I need help to determine the solution of the above questions.