Design a beam for a 26 ft simple span to support WD = 2 k/ft, WL = 3 k/ft and a concentrated load of PL = 20k at midspan. The beam is fully braced. The maximum permissible deflection is 1/1000 of the span. Use LFRD method and Fy = 50 ksi. Consider moment, shear, and deflection.

Fluids at rest possess no flow energy. 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.

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