Aheat pump is used to warm a building in the winter. this system implements an ideal vapor-compression cycle with r-134a as the working fluid. the cycle operates between 140 kpa and 900 kpa, with a mass flow rate of 0.03 kg/s. determine: (a) the heating load that can be met kw. (b) the power input required for this system kw (c) the coefficient of performance (d) the warmest outside temperature at which this particular cycle is unable to operate ∘c

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.

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

Which from the following instrument is commonly used to detect the high pitch butzing sound in bearings? [clo4] a)-digital ultrasonic meter b)-infrared camera c)-spectroscopic d)-vibrometer