A capacitor is charged to 1 coulomb; the capacitance is 9.00×10-5 farads. Then a switch is closed which puts the capacitor in a closed circuit with a resistor; the resistance is 9.00 ohms. Calculate the charge on the capacitor after 4.00 milliseconds. (1 ms = 0.001 s). I know some equations relating capacitance, charge, and voltage, but I don't understand how to approach this problem.