An adiabatic turbine operates with methane as the working fluid. the flow rate of the methane is 1000 g/s. at the inlet of the turbine the pressure is 97 bar and the temperature is 495°k. at the exit, the pressure is 94 bar and the temperature is 190°k. the residual enthalpies hy; and hez are -61.64r and -729r respectively. what is the enthalpy change? (6 marks] what is the net power delivered by the turbine? [6 marks)
data: c, = 2.84 kj/kg. k
b. a geothermal power plant uses geothermal water extracted at 160°c at a rate of 440 kg/s as its heat source. it produces 22.0 mw of net power. if the environmental temperature is 25 °c, determine:
the thermal efficiency [4 marks)
the maximum possible thermal efficiency [4 marks)
the actual heat rejection from the plant. (4 marks)
data: hsource = 675.47 kj/k and hsrink = 104.83 kj/k

Which explanation is true about what happens to a ray of light when it strikes a mirror? a. a light ray is transmitted toward a mirror at a certain angle. the light ray is then reflected by the mirror at an equal angle but in the opposite direction of the transmitted ray. b. an incident ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then reflected at an angle equal to the angle of incidence but on the opposite side of the perpendicular line. c. a reflecting ray strikes a mirror at an angle with a line perpendicular to the mirror. the light ray is then refracted at an angle equal to the angle of the reflecting ray and on the same side of the perpendicular line. d. an incident ray strikes a mirror at an angle with a line parallel to the mirror. the light ray is then transmitted at an angle equal to the angle of incidence but on the opposite side of the parallel line. you so much! : -d take the time to try and answer correctly.