The crank OB rotates about a fixed axis passing through O with a constant angular velocity ω. Roller A moves in a vertical groove. At the position on the figure, bar OB is vertical, OA is horizontal. Determine the angular velocity of rod AB, the speed of roller A; angular acceleration of rod AB, acceleration of roller A. Let ω = 1.5 rad/s, r = 1 m.

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

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.