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A sheet of metal was deformed elastically under balanced biaxial tension (σ x = oy, σ z = 0)
A. Derive an expression for the ratio of elastic strains, ez/ex, in terms of the elastic constants.
B. If E = 70 GPa and υ = 0.30, and ey is measured as 1.00 × 10-3, what is the value of ez?
refrigerant r-22 enters a constant diameter pipe at a pressure of 10 bar a temperature of 20degc and a velocity of 2.20
a frictionless piston-cylinder device contains 2 kg of nitrogen at 100 kpa and 300k. the nitrogen is compressed in a
A heat pump with a coefficient of performance of 3.5 provides energy at an average rate of 70,000 kJ/h to maintain a building at 20C on a day when the outside temperature is -5C. If electricity costs 8.5 cents per kW*h
a 2 m long concrete traffic barrier is used to provide safety during highway construction. if h45 cm determine the
Using the standard Fe-C phase diagram, draw a vertical line for each of the following steel alloys corresponding to their carbon content: AISI 1018, AISI 1045, AISI 1095, AISI 4140. Draw a point on the line for each alloy at 800oC and 425oC and descr..
a turbine produces 2 mw of power while accepting steam at 3 mpa and 400 c and rejecting steam at 50 kpa and 100c. find
a student takes a multiple choice exam with 10 questions each with 5 possible selections for the answer. suppose that
a gas-turbine power plant operates on the simple brayton cycle between the pressure limits of 100 and 800 kpa. air
What is the phase and the specific volume of water at 3000 Kpa and 455 degrees C? Show this state on a PV diagram
Niobium forms a substitutional solid solution with vanadium. Compute the weight percent of niobium that must be added to vanadium to yield an alloy that contains 1.55 x 1022 Nb atoms per cubic centimeter. The densities of pure Nb and V are 8.57 an..
1. determine the amount of excavation needed for the basement. a 2 foot working distance is required and the
Determine at t = 3 seconds: (a) the magnitudes of velocity and acceleration vectors, and (b) the angles which these vectors make with the x-axis.
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