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Consider a piston/cylinder arrangement that has a linear spring mounted such that as the piston rises to a certain point it will encounter the spring, which will offer a downward component of force as the piston rises further. Initially the cylinder contains water at 105°C, 85% quality with a volume of 1 L. The cylinder is heated and the piston rises until it encounters the spring at a cylinder volume of 1.5 L. If the piston diameter is 150 mm, the spring constant is 100 N/mm, and the final pressure in cylinder reaches 200 kPa after the heating process, find the temperature of the contents in the cylinder at the end of the process.
The dye appears 14 days later in an observation well 75 ft away from the injection point. Compute the seepage velocity and estimate the hydraulic gradient in the aquifer if the porosity of the soil is 42%.
a simple random sample of 20 items from a normal population resulted in a sample mean of 17.25 and a sample standard devation of 3.3 a. develop a 90% confidence interval for the population mean. b. develop a 95% confidence interval for the populatio..
Water is flowing at a depth of 10 ft with a velocity of 10 ft/s in a channel of rectangular section. Find the depth and change in water surface elevation caused by a smooth upward step in the channel bottom of 1 ft.
an unconfined compression test was conducted on a cylindrical clay specimen with the following properties: Peak load at failure = 4.5lb, diameter of sample = 1.2 in.
Mark's refrigerator has just died. He can get a basic fridge or a more efficient fridge with an Energy Star designation. Mark wants to consider a 10 year planning horizon using an interest rate of 5%.
A slurry containing 20 percent by weight of limestone (CaCO3) is processes to separate pure dry limestone from water. If feed rate is 2000kg/h, how much CaCO3 is produced per hour?
Determine the lengths and bearings of the sides of a closed polygon traverse whose corners have the following x and y coordinates: A(5000.00, 5000.00) B(5289.67, 5436.12) C(4884.96, 5354.54) D(4756.66, 5068.37)
A glass tube with inside diameter of 2-mm is inserted vertically into a dish of mercury at 20°C. Determine the difference in mercury levels inside and outside the tube.
A 75g , 30cm--long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 12g ball of clay traveling horizontally at 2.5m/s hits and sticks to the very bottom tip of the rod.
Determine the unstretched length of spring AC if a force P = 110 lb causes the angle theta = 60^circ for equilibrium. Cord AB is 2 {rm ft} long. Take k = 50;{rm lb/ft}
The 1.2-Mg mine car is being pulled by winch M mounted on the car. If the winch generates a constant power output of 30 kW, and the car starts from rest, determine the speed of the car when t = 5s.
A hollow circular, gray cast-iron pipe supports a red brass rod and weight W = 2 kips, as shown. The outside diameter of the pipe is d = 6". If the allowable compressive stress in the pipe is 5000 psi and the allowable shortening of the pipe is 0...
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