1. A first-order feedback control system shown below that exhibits the following output response when subjected to a unit-step input. R(s) + K --M Ts+1 C(s) 0.7 20 0.5 Time() (a) Find K and 7 for the system (design). (b) Without using the graph, compute time t in second when the output is 0.6 for K and T obtained in (a).