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A polymer is subjected to a cyclic stress of 5 MPa at a frequency of 1 Hz for 1 min. The phase angle is 0.05?. Calculate the temperature rise assuming no loss to the surroundings. E = 2GPa, C = 1.0 J/kg · K, and ρ = 1.0 Mg/m3.
a concentrating solar collector consists of a parabolic reflector and a collector tube of diameter d through which
a person weighing 800 lbf climbs a flight of stairs that extends a vertical distance of 300ft. calculate the work and
concentration is a process by which both useful heat and energy are produced. here a portion of high -pressure steam is
a closed rigid tank contains 2 kg of water initially a twophase liquid-vapor mixture at 80degc. heat transfer occurs
A rigid wall, insulated container is divided into two regions by a removable wall. One region contains 0.1 lbm of CO at 100F, while the other region contains 0.2 lbm of CO at 150?F. A stirrer is inserted into the container and when the wall between t..
it is well known that wind makes cold air feel much colder as a result of the wind-chill effect which is due to the
Using the data shown in Callister Figure 7.19, draw an approximate stress-strain curve for the 1040 steel at 0% cold work and at 30% cold work, clearly indicating the yield strength, ductility, and tensile strength of the steel before and after cold-..
the moisture content at the turbine exhaust is not to exceed 15%. determine the greatest allowable steam pressure at the turbine inlet and calculate the cycle efficiency.
The schematic of a power cycle using water flowing each component is shown. Water flows through the boiler and condenser at constant pressure and through the pump and turbine adiabatically.
A rectangular material sample (2 in tall and 1 in wide) is subjected to a vertical tensile stress of 50,000 psi on its upper edge. The bottom edge of the sample is constrained from displacing in the vertical, or y, direction but is free to expand or ..
A 4 pole, 9 coil, simplex wave wound machine with 20 turns per coil is rotating in a field of 3T, and pole area of 100cm2. Find the maximum torque generated from a 100V source, and an armature resistance of 1 ?. Find the current, if the machine has b..
a tank contains 2500 m3 of salt solution with a salt concentration of 20 kgm3. at time zero salt free water starts to
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