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An ideal gas flows in a pipe at 1010 and its molar mass is 44 kg/kmol. The pressure of the gas is
The pressure of water is increased from 130 kPa to 605 kPa by a pump. The temperature of water also increases by 0.15 C. The density of water is 1 kg/L and its specific heat is C. The enthalpy change of the water during this process is
The specific gravity of a fluid is 0.139. The specific weight of this fluid is
The speed of an aircraft is given to be 360 m/s in air. If the speed of sound at that location is 330 m/s, the flight of aircraft is
The weight of a 100-kg mass at sea level is
If mass, heat, and work are not allowed to cross the boundaries of a system, the system is called
The speed of an aircraft is given to be 965 km/h. If the speed of sound at that location is 316 m/s, the Mach number is
A hydroelectric power plant operates at its rated power of 5 MW. If the plant has produced 43.8 million kWh of electricity in a specified year, the number of hours the plant has operated that year is