The airplane is traveling in a straight line with a speed of 300 km/h, when the engines a and b produce a thrust of ta 40 kn and tb- 20 kn, respectively. determine the angular velocity of the airplane in t -5 s. the plane has a mass of 200 mg, its center of mass is located at g, and its radius of gyration about g is kg 15 m ta=40 kn 8m tg = 20 kn 8 m

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?

The higher the astm grain size number, the finer the gran is. a)-true b)-false

An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0