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The signboard truss is designed to support a horizontal wind load of 640 lb. If the resultant of this load passes though point C, calculate the forces in members BG and BF. The forces are positive if in tension, negative if in compression.
A tank contains 10,000 kg of xenon at 132 C, 82 bar. The plant supervisor asks you to remove xenon and fill the tank with 10,000 kg of steam at 200 C. What is the pressure in the tank when it is filled with steam?
A piston-cylinder arrangement holds a thermally perfect gas at p1=100kPa and T1 = 300K. Assume that cp = 1.0035 kJ/kg-K, cv = 0.7165 kJ/kg-K, and R = 0.287 kJ/
For each case, determine the specific volume at the indicated state. Locate the state on a sketch of the T-v diagram.
a system for delivering lawn fertilizer in liquid form. the nozzle on the end of the hose requires 20 psig of pressure
What are effects of the annealing process on the density of these dislocations ? Can you give examples for materials?
1. what is the second law of thermodynamics?2. what is isentropic flow and what are the two key assumptions required?3.
A plane can fly 299 mph in still air. If it can fly 180 miles downwind in the same amount of time it can fly 119 miles upwind, find the velocity of the wind.
air in a piston-cylinder assembly initially at 290 k and 100 kpa undergoes two internally reversible processes in
consider a counter-flow heat exchanger in a refrigeration system. saturated liquid-vapor mixture of r-22 enters the
Saturated liquid steam at 2 MPa steadily enters a valve where it is throttled to 0.3 MPa. The inlet and outlet diameter is 1 cm. The flow rate is 0.012 kg/s. Determine the outlet density [kg/m3] of the steam. Also show that it is reasonable to neglec..
the flow field for and atmospheric flow is given byv -my2pi imx2pi jwhere m1 s -1 and the x and y coordinates are the
a dwelling for which the heat transfer rate through the walls is 1400 btuh per degree temperature difference between
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