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A glass retort is to be used under the conditions that the temperature of the inside of the wall is 100?C and the outside is 0?C. What stress will develop on the outside? The properties of the glass are α = 1.5 × 10-6/?C, E = 70 GPa, υ = 0.30. [Hint: Assume a linear temperature gradient and for simplicity take the midpoint strain as zero.]
a 50 kg crate resting on a flat smooth surface is acted upon by a horizontal force that varies by the equation f1.5x
an individual weighs 150 lbf at sea level on earth. calculate the mass of the individual in lbm on earth. calculate
What kind(s) of mechanism (include barker classification if applicable) might be best to use for the following applications? Converting a rotating gear motion into the intermittent motion of a second hand on a watch. Converting the motion of a motor ..
using the kelvin-planck statement of the second law of thermodynamics demonstrate the following corollary. the
a pipeline is to be supported above ground on horizontal beams 14ft long. consider each beam to be simply supported at
The system is at rest in the position shown, with the 12-lb collar A resting on the spring (k = 20 lb/ft), when a constant 30-lb force is applied to the cable. What is the velocity of the collar when it has risen 1 ft? The collar is attached to th..
the picture below shows a system where superheated vapor enters a container at a flow rate of 90 kgs at 250c. the vapor
an ideal vapor-compression refrigeration cycle opperates at steady state with refrigeratn 134a as the working fluid.
five kilograms of air at 300 k is contained in a vertical cylinder by a frictionless piston of a mass such that the
Calculate with the Peng-Robinson equations for thermodynamic properties, the product compositions, stage temperatures, interstage flow rates and compositions, reboiler duty, and condenser duty for the distillation specifications
Using the thermodata computed from the matlab functions to compute the mixture-averaged mass specific Gibbs free energy of the final mixture, as a function of the progress variable (normalized as: 0 for no dissociation, and 1 for complete dissociatio..
A home has a total of 7.5 KW of lighting and the lights stay on 2/3 of the time. If electricity is priced at 12 cents/KWh, then how much money could be saved annually with a 25% reduction in use?
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