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A wall has a total R-value of 15. Determine the annual cost of the heat loss per square foot in a climate having 5000 heating degree-days. The heating unit efficiency is 70% and the fuel cost is $5.00/million BTUs.
air enters the compressor of a regenerative gas-turbine engine at 300 k and 100 kpa where it is compressed to 800 kpa
the masses of the bar and the disk are 5 kg and 10 kg respectively. the coefficient of kinetic frictionnbspbetween the
calculate and plot the response of a system with transfer function gs100s22s3s25s1 to the input ut10exp-tsin5t assuming
a submarine is cruising in the ocean at a depth of 320 m. salt water has a specific gravity of 1.03. determine the
A new cast iron pipe is 5 km long and 15 mm diameter is used to convey water at a rate of 0.0150m3s-1. Given the absolute roughness of the pipe is 0.26 mm, density of water is 998 kg/m3 and dynamic viscosity of water is 1.14 × 10-3 kgm 1s-1.
an insulated vertical piston-cylinder device initially contains 10kg of water 6kg of which is in the vapor phase. the
a 32000 kg airplane begins to climb at an angle of 3 degrees. its initial speed is 150 ms and after one minute its
A dump truck is shown in the figure. The loaded container has a mass of 8000 Kg and may be modelled as a solid homogeneous block. The hydraulic cylinder applies a force of 300 kN to the container in the starting position shown.
air is compressed at steady state from 1 bar 300 k to 6 bar with a mass flow rate of 4 kgs. each unit of mass passing
design a worm gear set to reduce the speed of a 1475 rpm electric motor to approximately 60 rpm and apply 170 nm torque
the buoyancy force acting on a 500 kg balloon is fb6kn and the air resistance is fd100v n where v is in ms. determine
carbon monoxide is initially in a 50 l tank at 210 kpa and 127c.a determine the mass of the gas in kilograms.b if 0.02
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