Damoed Oscillation in an RLC circuit

[Senrab]

Homework Statement

A single loop circuit consists of a 7.2 ohm resistor, a 12.0 H inductor, and a 3.20*10^-6 F capacitor. Initially the Capacitor has a charge of 6.20*10^-6 C and the current is zero. Find the charge on the capacitor N complete cycles later for a) N=5, b) N=10, and c) N=100.

Homework Equations

q=Qe^(-Rt/2L)cos(wt + p), where p is the phase constant and w is the angular frequency.

The Attempt at a Solution

I can't figure out how to solve this considering I'm given a # of complete cycles and I can't convert it to time. Sorry if I'm being dumb, I've been working on the same type of stuff for several hours now.

 

[ehild]

What is angular frequency? How is related the angular frequency to L, C, and R?

ehild

 

[RoyalCat]

What is angular frequency? How is related the angular frequency to L, C, and R?

ehild

After you find the angular frequency, how is it related to the time it takes the system to go through one cycle?