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