Apot holding 0.75 liter of water at 20°c is placed on a burner (state 1). the burner electric power is turned to 800 w. because the pot is open to the atmosphere, the pressure remains constant during the entire process and equal to 100 kpa. the water eventually reaches a saturated liquid condition (state 2) at which it begins to boil. the boiling process continues just until all the saturated liquid evaporates (state 3). a. draw the process on a t-v diagram. b. draw the process on a p-v diagram. c. determine the time between state 1 and state 2. d. determine the time between state 2 and state 3.

Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.

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?

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.