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A rectangular casting having the dimensions 3 inch by 5 inch by 10inch solidifies completely in 11.5min. Using n=2 in 2 inChvorinov's rule, calculate the mold constant B. Then compute the solidification time of a 0.5inch by 8inch by 8inch castingpoured under the same conditions?
the uniform disk of mass pivots freely on the cart of mass. determine the acceleration of the assembly and the angular
Fix the state at the turbine exit: If the state is superheated vapor, determine the temperature, in 8F. If the state is a two-phase liquid-vapor mixture, determine the quality.
a 1.875 inch diameter shaft machined from aisi 1018 cd steel supports a bending load during operation at 1750 rpm. if
Determine the engineering strains, e, and the true strains, ε, for each of the following:
Calculate the magnitude of the moment acting at the build-in end and specify the orientation of the moment vector relative to the principal centroidal axes of the section with the aid of a sketch and determine the stresses at each corner of the bu..
a sky diver with a mass of 70 kg jumps from an aircraft. the aerodynamic drag force acting on the sky diver is known to
Material D has a molecular weight of 213.45 g/mol and material E has a molecular weight of 75.12 g/mol. You desire to have a mixture of 15 mol % D. How much D is required to be added to 500 g of E to make this mixture?
15 kilograms of water are confined in a rigid vessel with a volume of 0.5 m3 with an intitial temperature of 50
determine the work done in lifting a 250-lb refrigerator 4 ft vertically into a van. alternatively the refrigerator
A blind cylindrical hole of 2cm diameter and 3 cm in length is drilled into a metal slab having emissivity 0.7. if the metal slab is maintained at 650 k , make calculations for the radiation heat escape from the hole.
The mixing process is adiabatic and the mixture is expanded to a condenser pressure of 0.10 bar in a low pressure turbine of 78% internal efficiency. Determine the power output and the thermal efficiency of the plant.
Consider a Carnot heat engine and a refrigerator operating between the same two thermal energy reservoirs. If the thermal efficiency of the heat engine is 0.80, the COP of the refrigerator is?
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