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An electronic device is available that will reduce year'slabor cost by $10,000. the equipment is expected to last for eightyears. If labor is cost increase at an average rate of 7% per year and the
It is known that the velocity distribution for steady, laminar flowin circular tubes (either horizontal od vertical) isparabolic. Consider a 10 -mm- diameter horizontal tubethrough with ethyl alcoho
A stabilization pond is designed for a 35-day detention time. If the pond is maintained at a capacity of 40 acre-feet, what is theaverage gpd flow to the stabilizaiton pond
The P.C. of a 3 degree curve, whose degree is based on a chord of100 ft. arc, is at Sta. 19+39.60 and the P.T is at Sta. 25+64.60. Calculate the deflection angle from the tangent at the P.C
a point within an elastic body was subjected to a system of planestress. strain gauges were used to measure that would allow for thecalculation of principal strain and stress values at that point.wi
An 1100 ft. straight line route survey, which had PI's at3+81.27 (I = 12o30') and 5+42.30 (I = 10o56'), laterhad 600 ft radius simple curves inserted at each PI. Computethe following: a)Curve data f
A cylindrical core, completely saturated with oil up to immobile water saturation, is immersed in water and the measured volume of oil displaced by imbibition of water is 7.5 c.c.
The density of oil is 0.7 g/cc, the density of water is 1.0 g/cc, the radius of capilary is 0.008 cm, the contact angle through water is 58, the interfacial tension is 50 dynes/cm. Calculate the hei
If the interfacial tension between air-mercury interface in a capillary tube is 480 dynes/cm and the contact angle through the mercury is 140, what would be the capillary pressure between oil and wa
derive an equation for the velocity profile within the film in terms of radial distance r, measured from the cylinderaxis, the film thickness, δ, and the appropriate physicalpropertiesof the l
An emf of 22.0 mV is induced in a495 turn coil when the current is changingat a rate of 5.0 A/s. What is the magneticflux through each turn of the coil at an instant when the currentis 1.00 A
A pickup truck has a width of 78.7 in. Ifit is traveling north at 39 m/s through amagnetic field with vertical component of 32 µT, what magnitude emf is induced between the driver and passenge
According to the photon energy formula, tripling the frequencyof the radiation from a monochromatic source will change the energycontent of the individually radiated photons by what factor
A copper bar with a rectangular cross section is held withoutstress between rigid supports. Subsequently, the temperatureof the bar is raised 50 C. Determine the stresses on allfaces of the elements
A plastic bar fit snugly between rigid supports at room temp. (68)but with no initial stress. When the temperature of a bar israised to 160 F the compressive stress on an inclined plane pqbecomes 17
A zone in the CBD is projected to contain 1,525,000 ft2 of residential space; 3,675,000 ft2 of service establishments; and atotal retail activity floor area of 2,100,000 ft2.
A collar of weight m slideswithout friction on a horizontal rod between springs A and B. Thecollar is pushed to the left, compressing spring A 0.1 m. k of A is1.6 kN/m and k of B is 2.8 kN/m.
A BRIDGE BUILT WITH STEEL GIRDERS IN 500mm in length and 50 m inwidth.Expansion joints are provided to compensate for the change inlength in the support girders as the temperature fluctuates
Lake silbersee is located in the German city of Nuernberg. The lak's water quality has been diminishedbecause of high hydrogen sulfide concentrations that originate froma nearby leaking landfill.
A small plot of land has measured dimesnions of 50 by 150 ft. the incertianity in the 50-ft is +/- 0.01 ft. Calculate the uncertianity heith which the 150-ft must be measred to ensure that the total
A crop has a consumptive use requirement of 1.2 acre-ft of water per acre of crop land. The crop is planted on 780 acres. Precipitation is 3.2 inches. The remainder of the 1.2 ac-ft/ac requirement
The mean annual precipitation for a 325 mi2 watershed is25 inches. Assume that 20% of the annual precipitation reachesthe watershed outlet as streamflow. Determine the meanstreamflow rate in ac-ft/y
A saturated 100 cm^3 clay sample has a natural water content of30%. It's found that the shrinkage limit occurs when the water content is 19%. If the specific gravity of soil solids is 2.7,
Lake Mead has a water surface area of 65,800 hectares. In acertain month the reservoir is full, and the pan evaporation rateis 25 cm. Using a pan coefficient of 0.73, estimate theevaporation volume
The pedestal supports a load P at its center. If the material has a mass density p, determine the radial dimension r as a function of z so that the average normal stress in the pedestal remains cons