Hãy chọn hình vẽ thể hiện cách dựng đường trung trực của đoạn thẳng AB

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

Burgers vector is generally parallel to the dislocation line. a)-true b)-false

An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.