please answer the question below

Switch Sin in the gure is closed at time t: 0,to begin charging an initially uncharged capacitor of capacitance C = 16.6 HP through a resistor of resistance R = 21.1 Q.At what time is the potential across the capacitor equal to that across the resistor? Number Units V Sliding contact The figure above shows a battery connected across a uniform resistor R0. A sliding contact can move across the resistor from a" = U at the left to m = 33.3 at the right. Moving the contact changes how much resistance is to the left of the contact and how much is to the right. Find the rate at which energy is dissipated in resistor R as a function of m. Denote the emf as E