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1. A very long electrical conductor 10 mm in diameter is concentric with a cooled cylindrical tube 50 mm in diameter whose surface is diffuse and gray with an emissivity of 0.9 and temperature of 27°C. The electrical conductor has a diffuse, gray surface with an emissivity of 0.6 and is dissipating 6.0 W per meter of length. Assuming that the space between the two surfaces is evacuated, calculate the surface temperature of the conductor.
2. Liquid oxygen is stored in a thin-walled, spherical container 0.8 m in diameter, which is enclosed within where q12,N and q12,0 represent the radiation heat trans- fer rates for N shields and no shields, respectively.
A Car Costs 25,000 dollars. You can buy it for cash for 21000 (right now) or buy it over time with a down payment of 8000 dollars and pay the remaining 17000 over 72 months at 12% interest compounded monthly.
The force F required to compress a spring a distance x is given by F - Fo = kx where k is the spring constant and Fo is the preload. Determine the work required to compress a spring, whose spring constant is k = 37 kN/m, a distance of 2 cm starting f..
Calculate the percent energy distribution in a steam generator that goes into steam, losses to flue gases, refuse and heat losses. The steam generator receives 480 short tons of coal per day. The heating value of coal is 13,000 BtU/lb",. 375,000 Ib,j..
Aim of this demonstration is to use measurements of the load required to propagate a crack (tear) in packaging tape to determine its fracture toughness and Describe the fracture behaviour of the insulation tape loaded with a small crack. Explain w..
A pneumatic displacement gage has d1=0.762 mm and d2=1.575 mm. The supply pressure is 68919.7 Pa with a random fluctuation of ±483 Pa, and the differential pressure Pd-Pa is measured with a water manometer that may be read with an uncertainty of 12.4..
a 10.00-meter-long pipe closed at one end was inverted and submerged vertically in a minnesota lake until the closed
air at 1175k 8 bar enters a turbine operating as steady state and expands adiabatically to an exit state of 1 bar. the
for a product at an aql of 2.5 and lot size of 5000 using mil standard 105e what is the probability of going to
a mercury-in-glass thermometer has 12 gram of mercury in bulb. the design requires that if temperature increases by
a new building to be located in a cold climate is being designed with a basement that has an l200 mm thick wall. inner
You notice that the ceramic coffee mugs in the office get too hot to hold about 10 seconds after pouring in the hot coffee. The wall thickness of the cup is 2mm. What, approximately, is the thermal diffusivity of the ceramic of the mug? According to ..
at a given instant train e has a speed of 20ms and an acceleration of 14ms2 acting in the direction shown 75 degrees to
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