3. When the switch in an RC circuit is closed, the voltage across the resistor, V(t), is given by the following expression -t/RC V(t)=Voed where R is the resistance in ohms, C is the capacitance in farads and V, is the voltage of the battery. With R = 6.00 0.50MQ, the following measurements of V(t) are taken as a function of time, t. t(s) V(t) (volts) 0 80 10 41 20 21 30 13 40 7 50 4 Using the method of least squares (no graphing is required for this problem), find the slope of the semilog graph of V(t) against t. From the slope and the value of R, calculate (i) the value of C in microfarads and (ii) the uncertainty in C (Note that you must use natural logarithms in this problem)