A24’ long w8 x 35 steel column is used to support an axial load. the column is made of astm a992 structural steel with and elastic modulus of 29,000 ksi and a yield strength of 50 ksi. it is pinned at both the top and bottom and the cross-sectional area is 10.3 in2 . the moment of inertia about the strong axis is 127 in4 and about the weak axis is 42.6 in 4 . calculate the maximum allowable load (in kips) on the compressive member considering buckling and yielding (by considering fos=1.5). [abs. to check: pallor = 98kupd)

Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

Ariver flows from north to south at 8 km/h. a boat is to cross this river from west to east at a speed of 20 km/h (speed of the boat with respect to the earth/ground). at what angle (in degrees) must the boat be pointed upstream such that it will proceed directly across the river (hint: find the speed of the boat with respect to water/river)? a 288 b. 21.8 c. 326 d. 30.2