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The charge on a capacitor in an ideal LC oscillator with an angular frequency of 200...

The charge on a capacitor in an ideal LC oscillator with an angular frequency of 200 rad/s is given by

q=Q cos(ωt+ϕ).

At t = 0.800 ms, the charge is q = 5.00 μC and the current is i = 0.300 mA. We want the phase ωt + ϕ (the argument of the cosine function) at that time and then we want the phase constant (or phase angle) ϕ of the oscillator.

a. What is the value of the phase? ωt+ϕ=?

b.What is the phase constant (or phase angle) ϕ?

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