Block b starts from rest and moves downward with a constant acceleration. knowing that after slider block a has moved 400 mm its velocity is 4 m/s, determine (a) the accelerations of a and b, (b) the velocity and the change in position of b after 2 s.

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

Asteel wire of 2 mm diameter is fixed between two points located 2 m apart. the tensile force in the wire is 250n, if its density of steel is given by 7830 kg/m3 the fundamental frequency of vibration hz? ?

Steam enters a converging-diverging nozzle at 1.0 mpa and 500°c with a negligible velocity at a mass flow rate of 2.5 kg/s, and it exits at a pressure of 200 kpa. assuming the flow through the nozzle to be isentropic, determine: the exit area and (a) (b) the exit mach number