A laboratory cell, contained 290cc of reservoir liquid at its bubble point of 2100 psia at 145°F. 21cc of mercury were removed from the cell and the pressure dropped to 1700
psia. Mercury was then re-injected at constant temperature and pressure and 0.153 SCF of
gas was removed leaving 270cc of liquid in the cell. The process was repeated reducing the
pressure to 14.7 psia and the temperature to 60°F. Then 0.45 SCF of gas was removed and
207.5cc of liquid remained in the cell

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

On a average work day more than work place firs are reorted

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.