Mechanical Engineering Answers

A closed tank contains 100 lbs of air at a pressure of 200 psia and a temperaure of 180 0F. The air is subsequently cooled to 80 0F. Find the: a.) the initial specific volume, ft3/lbm; b.) the volume of the tank, ft3; c.) the final specific volume, ft3/lbm; d.) the final pressure, psia.

Air initially at 100 0F and 100 psia and occupying a volume of 0.5 ft3 undergoes a reversible non-flow constant temperature process such that the final pressure becomes 20 psia. find the work done, ft.lbf.

During the constant pressure reversible non-flow process with air, the temperature increases from 400 0F to 1600 0F. Show process on the p-V and T-s coordinates and find the heat transfer in BTU/lbm.

During the constant volume reversible non-flow process with air, the temperature drops from 400K to 320K. Show process on the p-V and T-s coordinates and find the heat transfer in kJ/kg.

In the figure shown, the rod ABCD has 10 mm diameter and young s modulus 200GPa and
modulus of rigidity 80 GPa the value of (Ll and L2 and force P) according to your registration
number (see exanple below. Detemine
1-The deflection of point D
2-The deflection of point C

In the analysis of unsteady flow, or transient flow, processes, the system is abandoned in
favour of a control volume. Attention is given to a fixed region in space, not to a fixed mass
in motion. The control volume, defined by an imaginary closed boundary, is set up to
surround the equipment under study. Both mass and energy may cross the boundary.
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How do i determine the tension in bars connecting an amusement park ship ride (pedulum) to the pivot. Also, how do i determine the reaction force exerted on safety bars which keep passengers strapped in. The ride goes 360 degrees on 6th cycle.