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1. Helium is compressed isothermally from 121 kPa(abs) to 301 kPa(abs). Determine the entropy change associated with this process.
2. Air at 14.7 psia and 70 °F is compressed adiabatically by a centrifugal compressor to a pressure of 100 psia. What is the minimum temperature rise possible? Explain.
the 65-mm diameter steel shaft is subjected to the two loads that act in the directions shown. if the journal bearings
Express the equilibrium equations in terms of the appropriate displacements; E1 is constant for all members.
Design a single-cylinder atmospheric engine capable of lifting a mass of 1000 kg to a height of three meters. Assume reasonable values of cylinder temperature and pressure after combustion.
Perform a dimensional analysis to determine the dimensionless groups that would be required to define the pump performance. Arrange the groups so that the power and pump pressure each appear in only one group.
you want to weigh your horse so you mount a platform to the top of a vertical spring. with the loading of the platform
The antenna tower can be modeled as a steel beam of square section of side 1 in. for estimating its mass and stiffness. Find the tower s natural frequency of bending vibration about the y-axis.
What heat removal flux can be achieved at the surface of a horizontal 0.01 mm diameter electrical resistance wire in still 27?C air if its melting point is 927?C?
Determine the entropy production associated with both the filling and emptying of the tank if both are done isothermally.
a reversible power cycle whose thermal efficiency is 40 receives 50 kj by heat transfer from a hot reservoir at 600 k
Find the force in each member of the steel truss when the 3000-lb vertical load is applied to joint A. The area of each member is shown in the figure. Use E = 29 × 106 psi for steel.
The temperature on the faces of a plane wall 15cm thick are 375 and 85?.The wall is constructed of a special glass with the following properties:k=0.78W/m·?,ρ=2700Kg/m³,Cp=0.84KJ/Kg·?.What is the heat flow through the wall at steady-state cond..
A tapered cantilever beam AB having rectangular cross sections is subjected to a concentrated load P= 50 lb and a couple M0= 800 lb-in. acting at the free end [see figure part (a)]. The width b of the beam is constant and equal to 1.0 in., but th..
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