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1. A control mass gives out 1000 Btu of energy in the form of
a. Electrical work from a battery
b. Mechanical work from a spring
c. Heat transfer at 700 F Find the change in exergy of the control mass for each of the three cases.
2. A fraction of some power to a motor
(1), 2 kW, is turned into heat transfer at 800 R
(2) and then it dissipates in the ambient at 540 R
(3). Give the rates of exergy along the process 1-2-3.
the rig shown consists of a 1200-lb horizontal member abc and a vertical member dbe welded together at b. the rig is
Phenol is approximately 12 times more soluble in 1 volume of isopropyl ether than it is in 1 volume of water. How many extractions are required to decrease the concentration of phenol below 100 mg/L
Your job as a Highway Patrol Officer is to place a sign to ‘Slow Down' on the freeway prior to a major construction site. The posted freeway speed is 65 mph and a speed of 35 mph is required through the construction site.
Also, for each case, determine the corresponding orientation of the element with respect to the element shown and sketch the results on the element.
Given an aluminum simply supported beam with overhang, determine the applied load at the free end with a max deflection of 1”. b= 1”
A wood board with a 2in. by 4in. cross section is subjected to a tensile load of 100 lb. Determine the average normal stress and average shear stress developed in the wood fibers that are oriented at 30 degrees with the axis of the board.
Give one possible characteristic or property of sanstone and of the quartzite that made you decide not to select it for your concrete project?
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.
Consider a simply supported beam with a uniformly distributed load q AND a concentrated load P at midspan. Solve for dv/dx and v using differential equations.
Where Ce (mg/L) is the equilibrium concentration of the species in water and qe(mg/g) is the mass of sorbed carbofuran per mass of activated carbon. The carbofuran concentration in untreated water is 0.9 mg/L. The drinking water standard is 0.04 mg/L..
An electronics firm has a contract to deliver the following number of ratios during the next three months; month 1, 200 radios; month 2; 300 radios; month 3, 300 radios. For each radio produced during months 1 and 2, a $10 variable cost is incurred; ..
Commercial aqueous nitric acid, HNO3, has a density of 1.42 g/mL and is 16 M. Calculate the weight percent of HNO3 in the solution.
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