QUESTION 11 A power reactor has pressurized water at 336C . Steam. produced in the steam generator, is used to drive the turbine-generators. Eventually the steam is condensed to water at 37C and then heated again to start the cycle over. Calculate the maximum theoretical efciency for a heat engine operating between these two temperatures. 9 points Save Answer QUESTION 12 Two bodies 1 and 2 with heat capacities C1 and 02 and temperatures T1 and T2 are brought into thermal contact in a thermostat, after which the temperature Tis reached in thermal equilibrium. T1 =10.8 c T2 =88.2 C T = 46.3 \"C C1 = 37.4 J/\"C 02 =7 J/\"C : 9 points Save Answer QUESTION 8 spring-1 Unknown mass, wmf1 attached to the free end of a spring (the y spring-2 other end of the spring WWm f is fixed) oscillates with the frequency J 1. WWof = ? The same mass oscillates with the frequency f2 on the other spring. What is the frequency of the system of the springs and the masses, shown it in the figure? f1 = 9.65Hz, f2 = 5.26Hz, f = ? Hz Input your answer in Hz using 3 significant figures. Hint 8 points Save AnswerQUESTION 10 A point body, moving along the x-axis, smoothly changing speed, moves in such a way that, for each subsequent time interval T from the beginning of the movement, the body travels a longer distance by 2D. Moreover, D is the distance traveled for the first time interval