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For an isotropic elastic solid, derive expressions for the strain energy density in terms of the components of stress or strain tensors for
(a) plane strain and
(b) plane stress
A floor slab has a fundamental bending frequency of 10Hz. A shaker is placed at the centre of the slab for a dynamic testing. The tests confirm that the slab displays a damping ratio of 2% of critical.
Determine the discharge of a trapezoidal concrete channel section with a bottom width of 4 ft and side slopes of 2:1. The depth of flow is 5 ft and the channel slope is 0.5%
The beam and attached hoisting mechanism together weigh 2400 lb with center of gravity at G. If the initial acceleration α of point P on the hoisting cable is 20ft/sec2 calculate the corresponding reaction at the support A
A car travelling at 60 mph in a construction area skids into a stack of concrete barriers. Skid marks leading to the crash measures 150 ft .
Neglect the mass of the cables and treat the chair and person as one particle.
What is the TCE concentration in ppm if the tank is held at (a) 4 degrees C and (b) 35 degrees C (c) What is the TCE concentration in ppm if the tank is filled with hexane instead of water Consider the temperature dependence of the density of wat..
Electric power is expensive, piping were built long time ago, population has grown,demand exceeds supply of water. What is the best thing to do ?
Assume that the design temperature and residence time have been established as 1300 degrees F and 0.6 seconds, respectively. The type of burner used in the process requires outside air at a mass ratio of 12:1 (air to fuel gas).
A city is considering a 3 stage membrane system to treat brackish groundwater at its water treatment plant, WTP (Qf=1000m^3/d, Cf=2000mg/L TDS). Each stage can perform 60 % water recovery (Qp/Cf) and 90% salt rejection (1-Cp/Cf)
What are minerals and sketch different types of mineral crystal forms and list different types of rock forming minerals. Describe with examples the importance of mineral identification in engineering applications.
Important information about Short essay, In managing the uncertainties of ethical issues in engineering, what are some questions that we may ask to limit some of the risk
a beam is made by bonding a brass core to a steel tube and is subjected to a bending moment as shown. knowing that b
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