How do you calculate the dielectric constant of a material when the given data includes the capacitance, the potential difference of the circuit, and additional charge that flows from the capacitor?

Question

anonymous · Answer

Q= CV. 
Q is the charge, C is the capacitance, and V is the voltage.
If you have dialectric, it's
Q' = kCV
k is the dialectric constant.
You have 2 equations, and 2 unknowns, should be able to proceed from there.
CV for the second eq stays the same. Q' is the new charge, with the original+extra