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1. A mass and atmosphere loaded piston/cylinder contains 4 lbm water at 500 lbf/in.2, 200 F. Heat is added from a reservoirs at 1200 F to the water until it reaches 1000 F. Find the work, heat transfer, and total entropy generation for the system and its surroundings.
2. A 1-gal jug of milk at 75 F is placed in your refrigerator, where it is cooled down to the refrigerator's inside temperature of 40 F. Assume the milk has the properties of liquid water and find the entropy generated in the cooling process.
Sometimes the side of concrete bridges is observed to turn black in colour.
A falling-head permeability test was carried out on a clay soil of diameter 10 cm and length 15 cm. In 1 hour the head in the standpipe of diameter 5 mm dropped from 68 cm to 50.2 cm. Calculate the hydraulic conductivity of this clay.
Biological treatment processes for wastewater can be categorised as dispersed growth and attached growth systems. Discuss the advantages and disadvantages of attached growth systems over dispersed growth systems.
How to use the bisection method on the van der waals equation Problem The van der Waals equation gives a relationship between the pressure P (in atm.),
A pipe network in the form of a cube is made with twelve identical pipes. Each pipe forms an edge of the cube. If the entire inflow and outflow occurs at two adjacent corners, determine the percentage of the flow
A C10x20 catilever beam is 12 feet long, supported on the right side. The beam supports two point loads: Load 1 is 2500 lbf and is located 2.5 feet from the wall. Load 2 is 1300 lbf and is located 12 feet from the wall.
A two-dimensional flow field is given by u=2+xy+3t^2, v=2xy^2+t. Find the velocity and acceleration of a particle of fluid at point (2,3) at t=4. Specify units in terms of L and T.
A reverse osmosis plant desalinates 5*10^6 L/day of feedwater containing 1500 mg/l of salt, yeilding 3*10^6L/day of product water with 75 mg/l of salt. What would be the salt concentration be in the brine?
A 1500-foot subdivision street is to be constructed. The layout will be completed in three days; the fill will be brought in over the course of eight days; the compaction/grading will be completed in five days
A 800 m vertical curve joins a -3% grade line to a 5% grade line. The PVI of the curve is at station 6200 and its elevation is 600.6 ft. Compute the elevations at 100-ft stations throughout the curve.
effect of acidic water on strength of soil used to store the water. the reduction in strength at various acidic ph
The shift in the oxygen-hemoglobin dissociation curve with pH and PCO2 provides more oxygen available to tissues. As an example, consider the oxygen uptake by muscle tissue. The blood flow rate is 1 L/min under resting conditions.
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