Acylinder of hydrogen has a volume of 0.1m'. its pressure is found to be 20 atm at 20°c. what mass of hydrogen does it contain? if it was filled with oxygen instead to the same pressure, how much oxygen would it contain? (molar mass of h, = 2 kg/kmol, of o2 = 32 kg/kmol, 1 atm = 105 pa, r = 8.3143 kj/kmol-k).

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

The force on a cutting tool are 2600n vertically downward and 2100 horizontal. determine the resultant force acting on the tool and the angle at which it acts.

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.