A converging nozzle has an exit area of 50 cm2. Air stored in a tankreservoir at 500K is to be discharged through the nozzle to an ambientpressure of 120 kPa. Assume isentropic flow. a)Determine the minimum reservoir pressure needed to choke the nozzle. [10 points]b)Calculate the massflow rate when the reservoir pressure is 150 kPa [15 points]

What precautions should you take to prevent injuries when dealing with heavy loads?

An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)

Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?