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Air in a piston/cylinder is used as a small air spring that should support a steady load of 200 N. Assume that the load can vary with ±10% over a period of 1 s and that the displacement should be limited to ±0.01 m. For some choice of sizes, show the spring displacement, x, as a function of load and compare that to an elastic linear coil spring designed for the same conditions.
a round steel alloy bar with a diameter of 0.75 in and a gauge length of 3.0 in was subjected to tension, with the results shown in the accompanying table. using a computer spread sheet program
What is the relation between reflection and transmission coeffients of a sea wall
A well-mixed sewage lagoon (a shallow pond) is receiving 430 m^3/d of sewage out of a sewer pipe. The lagoon has a surface area of 10 ha (hectares) and a depth of 1 m. The pollutant concentration in the raw sewage discharging into the lagoon is 18..
The 60mm diameter shaft ABC is supported by two journal bearings, while the 80mm diameter shaft EH is fixed at E and supported by a journal bearing at H. If T1= 2 kN*m and T2= 4 kN*m
A ground level source is emitting pollution. An air sampler is located 1 km downwind and 0.5km crosswind of the source measures the concentration of the pollutant ant ground level as 10 micrograms/cubic meter.
ENS 4115 - Advanced Structural Analysis and Design. Your task is to complete the preliminary design of the frame. For preliminary design stage, it is accepted that the frame is detached from the remaining structure after load tributary and geometry..
Toilet from the 1980's uses 10 liters of water per flush (10 Lpf), which was conservative in its day. The toilet is connected to a 1,250-gallon septic tank (effective capacity, measured to the bottom of the outlet). How many flushes does it take t..
A ground water sample has a pH of 7.5, hardness (due to primarily Ca2+) of 100 mg/L, and an alkalinity of 250 mg/L as CaCO3(s). Is the calcite precipitating or dissolving in the pore water
The wet mass of a sample of a saturated soil is 520grams. the dry mass, after oven-drying, is 400grams. determine the water content, void ratio, saturated unit weight, and effective unit weight.
Determine the number of pumps needed and locations of well points. A pump test was conducted to evaluate hydrogeological information of the site, the hydraulic properties of soil and radius of influence. A fully penetrating well points with well radi..
Sketch the SCS triangular and curvilinear UHs and the mass curve for a 100-mi^2 watershed which is 60% good condition meadow and 40% good cover forest land. The watershed consists of 70% soil group C and 30% soul group A.
Calculate the average velocity (rnps), crosssectional area (rn"), and depth (m) for the stretch. To make these estimates, assume that the stretch can be idealized as a rectangular channel.
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