Calculate the surface temperature of a black surface, 1.6 m^2 in area if the rate of heat transfer is 632 kw. the stefan-boltzmann constant is σ = 5.67 x 10^-8 w/m^2 k^4 a) 1734 °c b) 273 °c c) 1625 k d) 1640 k e) 1682 k

Find the kinematic pressure of 160kpa. for air, r-287 j/ kg k. and hair al viscosity of air at a temperature of 50°c and an absolute (10 points) (b) find the dynamic viscosity of air at 110 °c. sutherland constant for air is 111k

The sum of the normal stresses does not change as the stress state rotates through an angle. a)-trune b)- false

Acircular aluminum shaft mounted in a journal is shown. the symmetric clearance gap between the shaft and journal is filled with sae 10w-30 oil at t 30°c. the shaft is caused to turn by the attached mass and cord. develop and solve a differential equation for the angular speed of the shaft as a function of time.