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Banks typically offer 15-,20-, and 30- year loans. a) Calculate the monthly loan payment to repay a $100,000 home loan at 7% ARP over 30 years.
Terry wants to purchase a used car for $8000. The dealer offered to finance the deal at 8.5% APR for 4 years with 10% down payment. Terry's bank will provide a loan at 7.8% for 3 years, but wants a
A square footing 2 meters by 2 meters is to be constructed 1.22 meters below the ground surface. The groundwater table is located 1.82 meters below the ground surface.
A 1.5 meter deep vertical wall trench is to be cut in a soil whose unit weight is 17.36 kN/cubic meters, angle of internal friction is 25 degrees, and cohesion is 20.6 kN/square meters.
Design a concrete column of 14 ft high to support a dead load of 80 kips and a live load of 200 kips. f'c= 6,000 psi fy= 60,000 psi
some skin divers go as deep as 50m. What is the gage pressure at this depth in fresh water, and what is the ratio of the absolute pressure at this depth to normal atmospheric pressure
Calculate the rate of entropy change for each component of a refrigerator that uses 10 kW power, rejects 14 kW heat and has a high temperature reservoir at 400 K
Steam expands in an turbine operating in steady-state conditions with a mass flow rate of 40,000 kg/hr. The steam enters the turbine at 8 MPa and 500 C, and exits as a saturated vapor at 40 kPa.
A sealed insulated room contains 90 m^3 air at 12 C and 100 kPa. A container with 45 kg of water at 95 C is placed in the room. After heat transfer between the air and water, thermal equilibrium is
An insulated system contains two solid blocks in contact with each other; one hot and the other cold. After heat transfer over some time, thermal equilibrium is established in the container.
A piston-cylinder device contains 2 kg saturated water vapor at 600 kPa. The water expands adiabatically until the final pressure is 100kPa. And 1,465 kJ work is produced.
Suppose we want to estimate the average weight of adult males in greater metropolitan Atlanta area. We draw a random sample of 1,000 men from a population of 1,000,000 men and weigh them.
A cylindrical soil sample fails under an axial vertical stress of 160 kN/m^2, when it is laterally unconfined. The failure plane makes an angle of 50 degrees with the horizontal.
List the main sources of heat and humidity in mines and briefly describe the methods that can be used to control heat and humidity in an underground mining situation.
how large a sample must we take in order to be a) 95% b) 90% c) 99 d) 99.73% confident that the error in the estimated mean lifetime will not exceed 20 hours.
it is found that the lifetimes of television tubes manufactured by a company have a normal distribution with mean of 2000 hours and standard deviation of 60 hours. if 10 tubes are selected at random
Suppose that the acceleration of the train during the interval time from t=2 to t=4 s is a 2t m/s^2, and at t = 2 s its velocity is v = 180 km/hr. What is the train's velocity at t = 4 s
A horizontal Curve is designed for a two lane mountainous terrain. The following data are known. intersection angle: 40 degrees tangent length: 436.76 ft Station on PI: 2700+10.65 fs=0.12 e=0.08
Nitrogen expands in a friction-less piston-cylinder device from 0.10 to 0.30 m^3. The process is described by P= 7.4 - 40v + 60v^2 , where P is in bars and V is in cubic meters. Determine the work i
Determine the volume of three identical activated sludge tanks following primary clarification to aerate 36,000 m cubed/d with a BOD concentration of 180 mg/l at a BOD loading of 560 g/m cubed*d.
Determine the activated sludge aeration volume required to treat 2.64 mgd with a BOD of 120 mg/l based on the criteria of a maximum BOD loading of 40 lb/1000 ft cubed/day and a minimum aeration peri
Calculate the surface area required for a stabilization pond to serve a domestic population of 1000. Assume 80 gpcd at 210 mg/l of BOD. Use a design loading of 20 lb of BOD/acre/day.
Calculate the BOD loading and days of winter storage available between the 0.6 and 1.5 m depths, assuming a daily water loss of 0.30 cm by evaporation and seepage.
State the two main reasons why an activated sludge system is operated at a relatively low food/microorganism ratio.
Describe the various methods of methane drainage available to drain gas for longwall mining operations and methane drainage of longwall operations what factors influence the spacing of drainage boreh