Air enters a compressor at 14.7 psia and 70°f. the inlet volumetric flow rate is 16.6 ft3/s and the flow area is 0.26 ft. the air exits at 35 psia with a velocity of 50 ft/s. the power input is 100 hp. heat transfer from the compressor to its surroundings is 1.0 btu per lbm of air flowing. assume steady state operation, negligible potential energy effects, and ideal gas behavior. determine: a. velocity of the air at the inlet [ft /s] b. mass flow rate of air [lbm/s) c. compressor exit temperature (°f). d. change in kinetic energy across compressor (btu/lbm) and compare with change in enthalpy

When using the ohmmeter function of a digital multimeter, the leads are placed in what position relative to the component being tested? a. parallel b. control c. series d. line

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

A-mn has a cubic structure with a0 0.8931 nm and a density of 7.47 g/cm3. b-mn has a different cubic structure, with a0 0.6326 nm and a density of 7.26 g/cm3. the atomic weight of manganese is 54.938 g/mol and the atomic radius is 0.112 nm. determine the percent volume change that would occur if a-mn transforms to b-mn.