A site is underlain by a 10 meter layer of dry gravel with unit weight = 20 kN/m3. The lateral stress ratio of the gravel is 0.25. Point A is located 6 meters below the ground surface. Determine the shear stress that acts at point A on a plane inclined 45 degrees counterclockwise from the horizontal. Express your answer in kPa, but do not write the units in the text box (just the numeric answer). If you get a negative answer, do not write the negative sign "-". For example, if you get -12 kPa, simply write 12.

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.

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.

Items are similar to the free issue items, but their access is limited. (clo5) a)-bin stock items free issue b)-bin stock controlled issue c)-critical or insurance spares d)-rebuildable spares e)-consumables