The following creep data were taken on an aluminum alloy at 400 ⁰c held at a constant stress of 25mpa. plot the data as strain versus time, and then determine the steady state (or minimum) creep rate. time (min)straintime (min)strain 00.000160.135 20.025180.153 40.043200.172 60.065220.193 80.078240.219 100.092260.255 120.109280.307 140.120300.368

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

Which of the following is the most important advantage of a large field of view? a. allows larger areas to be examined b. relieves eyestrain c. minimizes parallax errors. d. increases precision in proportion to the in- crease in field of view

Liquid flows at steady state at a rate of 2 lb/'s through a pump, which operates to raise the elevation of the liquid 100 ft from control volume inlet to exit. the liquid specific enthalpy at the inlet is 40.09 btu/lb and at the exit is 40.94 btub. the pump requires 3 btu/s of power to operate. if kinetic energy effects are negligible and gravitational acceleration is 32.174 tt/s, the heat transfer rate associated with this steady state process is most closely 1)-2,02 btu/s from the liquid to the surroundings 2)-3.98 btu/s from the surroundings to the liquid. 3)-4.96 btu/s from the surroundings to the liquid. 4)-1.04 btu/s from the liquid to the surroundings.