A parallel-plate air capacitor is to store charge of

Question

Compute all parts of following problem:

Problem: A parallel-plate air capacitor is to store charge of magnitude 210pC on each plate when the potential difference between the plates is 43.0V.

Part A: If the area of each plate is 6.80 cm², what is the separation between the plates?

d= ______

Part B: If the separation between the two plates is double the value calculated in part (a), what potential difference is required for the capacitor to store charge of magnitude 210pC on each plate?

V=________

Please show all work and steps to determine the separation between the plates.