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Radioactive wastes are stored in a spherical type 316 stainless steel tank (kss = 13 W/mK) of inner diameter 1 m and 1 cm wall thickness. Heat is generated in the wastes at a rate of 3 × 104 W/m3. The outer surface of the tank is cooled by air at 300 K with a heat transfer coefficient of 100 W/m2K. Determine the maximum temperature in the tank. Take the thermal conductivity of the wastes as 2.0 W/mK.
Show how Kh, and Kow can be used to describe Koa. You must show how the concentration units for all equilibrium distribution ratios either cancel or remain to give the final value for Koa. Octonal-air partitioning coefficient (Koa = C(octanol)/C(a..
The new owners propose to flush the pond into their discharge pipe leading to the Atlantic Ocean, which has a salt concentration above 30,000 mg/L. What flow rate of fresh water (in m3/s) must they use to reduce the salt concentration
A BOD5 test sample of river water has the following test data. DO on day 0 = 7.9 mg/L. DO on day 5 = 2.3 mg/L. What is the BOD5 of the river water
Suppose that in an apparatus it is necessary to maintain precisely the cross section of a 20mm circular nickel steel bar. If this bar is heated to 200 deg Celcius, what tensile force should be applied to the bar to maintain its cross sectional dim..
Oil (SAE 30) flows between parallel plates spaced 5mm apart. The bottom plate is fixed, but the upper plate moves with avelocity of .2 m/s in the positive x direction. The pressuregradient is 60 kPa/m, and is negative.
When loaded, the beam carries a 10-kN/m uniformly distributed load. Neglecting the weight of the cable, approximate the following: (a) The change in length of the cable when the beam is under load
Who is responsible for verifying that the construction of the building complies with the hurricane protection provisions of the building codes What authority does the responsible party have to verify such compliance
The width of the river is 10 ft, the depth is 1 ft, longitudinal slope of 0.001, and the Manning's coefficients is 0.03. To estimate travel times and dispersion coefficients, you injected 50 gm of rhodamine dye at one bank of the river
The block has a mass of 150 kg and rests on a surface for which the coefficients of static and kinetic friction are 0.5 and 0.4, respectively. If a force F = (60t^2) N, where t is in seconds, is applied to the cable, determine the power developed ..
The moment of inertia of the footing about its diameter is piB^4/64. What would be the maximum eccentricity such that the entire soil beneath the footing is in compression FOr this value of eccentricity, draw the pressure distribution around the p..
A balloon is being inflated at the rate of 15m^3/min. At what rate is the diameter increasing after 5 min? Assume that the diameter is zero at time zero.
Determine the vertical stress of 4m below the centre of shallow foundation 3 x 3m carrying a uniform pressure of 275 kN/m3. Plot the variation of vertical stress with depth (up to 10m) below the centre of the foundation
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