For each of the characteristic equations of feedback control systems given, determine the range of K so that the system is asymptotically stable. Determine the value of Kso that the system is marginally stable and the frequency of sustained oscillation if applicable. s4 + Ks3 + 2s2 + (K + 1)s + 10 = 0

Apiston-cylinder device contains 0.1 m3 of liquid water and 0.9 m3 of water vapor in equilibrium at 800 kpa. heat is transferred at constant pressure until the temperature of water reaches 350 °c. determine (a) the quality of water at the initial state (b) the work associated with this process, (c) the heat associated with this process.