An object of mass 3m moves in the +x direction at 3 m/s. it breaks into two pices of mass m and 2m. mass 2m moves in a direction 30 degrees above the x-axis and mass m moves in a direction 45 degrees below the x-axis. there is no gravity or air resistance to consider. find the final velocities of the two masses.

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?

Holes drilled several kilometers into earth’s crust provide direct evidence about earth’s interior in the form of

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)