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A 50-ohm electrical resistor carries a current of 5 amperes. The resistor is maintained at a temperature of 30o C. Determine the rate at which heat must be transferred to the surroundings and the rate of entropy change of the resistor.
What would the B/C ratio be if the light poles were twice as far apart as assumed above?
It is thought that a new process for producing a certain chemical may be cheaper than the currently used process. Each process was run 6 times, and the cost of producing 100-L of the chemical was determined each time.
An element of material subjected to a plane strain has a strain epsilon x of 280x10^-6, a strain epsilon y of 420x10^-6 and an engineering shear strain gamma xy of 150x10^-6.
A hazardous waste incinerator is to burn 200 Kg/h of PCB waste that is 30 % PCB and 70 % organic solvents. During testing phase, the concentration of PCB in the emission was recorded as 0.025 g/ m³
A cast iron water main 14m long of 600 mm inside diameter and 30 mm wall thickness runs full of water and is supported at its ends. Calculate the maximum stress in the metal if density of cast iron is 7200 kg/m and that of water is 1000 kgm.
Determine the strain components strainx, Strainy, and gammaxy, then sketch the deformed shape in the xy orientation, paying particular attention to the sign of the shear deformation.
The reference current for the DAC0808 is 2.0 mA. With the DAC output connected to the inverting input of an op amp with a feedback resistor of 5.0 kohms, what is the op amp output voltage with a digital input of 0x80
A piston cylinder contains 0.8kg of steam (water vapor) at 300 deg C and 1MPa absolute. The steam is cooled at constant pressure until half of the mass condenses.
An embankment for a highway 30m wide & 1.5m in a compacted thickness is to be constructed from a sandy trucked from a borrow pit. the water contenet of the sandy soil in the borrow pit is 15%& its void ratio is 0.69.
A concrete dam retaining water has a specific weight of concrete of 23.5kn/m3, what is the factor of safety against sliding & overturning and pressure intensity on the base if coefficient of friction is 0.45
A pile resists the tension developed by three stay cables for a major tent (Membrane) Structure. Assuming no bending is desired in the pile (no resultant horizontal component), what is the magnitude of the force S if the angle \thetaS = 30 degrees
The water line to a house is usually 3'4" copper tube. Find the flow rate that can be delivered and still maintain laminar flow in the tube
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