… and if you wish to think about some more practical examples for capacitor calculations you can check the following set of university style video lessons as a homework: Viewing is optional.
Finding the Equivalent Capacitance
Finding the Charge On & Voltage Across Capacitors
Example Problem (1 of 4) Q=? U=?
Example Problem (2 of 4) V=? U=?
Example Problem (3 of 4) i(t)=? i(t=2s)=?
Example Problem (4 of 4) v(t)=? v(t=0.1s)=?
Capacitors with Current Source
Given Voltage, Determine Current
Given Current, Determine Voltage