Aball rolls across a table at a constant speed for 0.50 m. then it falls onto the floor. it takes the ball 0.40 s to cover the 0.50 m. the path of the ball is shown in the drawing. the tabletop is 1.5 m above the floor. find x, the distance that the ball travels horizontally after it leaves the table top.

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)