Large parallel conducting plates each with area 40 m2 are

Question

Compute all parts of given problem:

Problem: Large parallel conducting plates, each with area 4.0 m², are separated by 0.06 m. The plates are connected to the terminals of a 12-volt battery.

Part A: How much total charge is on the positive plate?

Part B: If proton is released from rest one centimeter from the positive plate, how fast will it be traveling when it is one centimeter from the negative plate?

Show your all work and steps to determine how much total charge is on the positive plate.