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A plate storage system for a self-serve salad bar in a restaurant. As plates are added to or withdrawn from the stack, the spring force and stiffness are such that the plates always protrude above the tabletop by about 60 mm. If each plate has 0.509 kg mass, and if the support A also has 0.509 kg mass, determine the stiffness k and unstretched length L0 of the spring. Assume the spring can be compressed by a maximum of 40% of its initial unstretched length before its coils begin to touch. Also specify the number of plates that can be stored. Assume the system has guides or other mechanisms so the support A is always horizontal.
A tank containing acetone at 20 oC has a drain pipe connected vertically at the bottom. The pipe is made of galvanized iron, 0.5 in NPS Schedule 40 with length L= 2m. The acetone depth in the tank is H= 5 m.
0.5 m-diameter concrete pipe (5.0 cm rigid wall thickness with rigid pipe walls) carries water 600m before discharging into another reservoir. The surface elevation of the downstream reservoir is 55 m lower than the supply reservoir.
The power loss, p , in a journal bearing depends on length, L; diameter, D; clearance, c; and rotational speed, w. You also have to worry about lubricant viscosity, density, and pressure. Obtain the dimensionless groups that charactrize this probl..
A u-tube manometer is used to measure the pressure of a vessel under vacuum. Assume the manometer is open to atmospheric pressure (101.325 kPa) and the density of the fluid in the manometer is 12.0 g/cm3.
Argon gas is heated in a constant pressure process from 20.0 to 500.°C. Assuming ideal gas behavior, determine: a. The ratio of the final to initial volumes. b. The change in specific internal energy. c. The change in specific enthalpy of the argon.
Compute departures and latitudes, linear misclosure, and relative precision for a five-sided, closed traverse. It is given that the aziumuth of AB is 74 degrees 31 minutes, 17 seconds, A = 105 degrees 13 minutes 14 seconds B = 92
An equal-tangent crest vertical curve has a 50 mi/h design speed. The initial grade is +3%. The high point is at station 33+37.43 and the PVT is at station 37+18.26. What is the elevation difference between the high point and the PVT?
Ocean water contains 0.9 ounce of gold per ton. Method A costs $220 per ton of water processed and will recover 85% of the metal. Method B costs $160 per ton of water processed and will recover e of the metal.
A runs slope a distance of 156.777 m from one point to another point at a rate of +1.5%. What is the corresponding horizontal distance between the points?
Consider the design of wastewater treatment plant for a community wiyh average daily and peak hourly wastewater design flows of 2.0 mgd. The raw sewage has an average of 230 mg/l BOD5 and 260 mg/l of suspended solids.
The hull of a boat has a volme of 150m and the total mass of the boat when empty is 8560kg. determine how much load this boat can carry without sinking in a lake.
As a highway patrol officer, you are patricipating in a speed trap. A car passes your patrol car which you clock at 55 mph. One and a half minutes later, your partner in another patrol car situated two miles away from you, clocks the same car at 5..
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