Problem (3) A volleyball player jump serves, hitting the ball at a height of 10 ft above the ground. The ball’s initial velocity is horizontal, and the ball strikes the ground 49 ft away. Determine the initial velocity of the ball AA and the velocity after impact with the floor BB, knowing that the coefficient of restitution is 0.8. Assume that the ground is smooth. Also determine the angle between the velocity after impact and the ground. (Hint: the line of impact is vertical). �

Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.

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 characteristic roots of a dynamic system are: 1.7920 1.8160 i, -1.7920 1.8160 i, -0.4160 what is the order of this system? what are the settling time and damping ratio of the system?