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Refer to the DC circuit shown in Figure 1 with the parameters VV,.= 120 V, RR₁ = 100, RR₂ = 150 2, CC = 100 μF. Assume the switch has been closed for a long time and it is opened at time t = 0 s. t=0 s is R₁ V₂ Ve R₂ Figure 1 Assume that prior to opening the switch, the capacitor is fully charged by the source. (a) Calculate the voltage vvcc and the current it just before the switch is opened (at t=0 s). [2 marks] (b) Calculate the time constant of the circuit before the switch is opened. [2 marks] (c) Calculate the time constant of the circuit after the switch is opened. [5 marks] (d) Calculate the voltage vvcc and the current iicc just after the switch is opened (at t =0*s). [6 marks] (e) Calculate the time it will take for the capacitor to reach a new steady-state voltage after the switch is opened. [2 marks] (f) Calculate the steady-state voltage reached at the time calculated in Part (e). [3 marks] (g) Calculate the energy stored in the capacitor at tt = 0 s. [2 marks]