Cranes, such as this one that is removing the crane that was involved in the brick refacing of krannert center, are comprised of truss-like structures to achive high strength and low weight. let us model the illustrated crane boom as a planar truss that is subjected to the tension load t t. given the following: t = t=700 kn l = 2 l=2 m θ = 5 o θ=5o α = 20 o α=20o determine force f a b fab in kn in the blue member a b ab¯. matlab input: t = 700; l = 2; theta = 5; alpha = 20;

The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false

Derive the correction factor formula for conical nozzle i=-(1+ cosa) and calculate the nozzle angle correction factor for a nozzle whose divergence hal-fangle is 13 (hint: assume that all the mass flow originates at the apex of the cone.

At steady state, air at 200 kpa, 325 k, and mass flow rate of 0.5 kg/s enters an insulated duct having differing inlet and exit cross-sectional areas. the inlet cross-sectional area is 6 cm2. at the duct exit, the pressure of the air is 100 kpa and the velocity is 250 m/s. neglecting potential energy effects and modeling air as an 1.008 kj/kg k, determine ideal gas with constant cp = (a) the velocity of the air at the inlet, in m/s. (b) the temperature of the air at the exit, in k. (c) the exit cross-sectional area, in cm2