At the presentation ceremony, a championship bowler is presented a 1.60-kg trophy which he holds at arm's length, a distance of 0.655 m from his shoulder joint.

(a) determine the torque the trophy exerts about the shoulder joint when his arm is horizontal. (enter the magnitude only.)

(b) determine the torque the trophy exerts about the shoulder joint when his arm is at an angle of 15.0

Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)