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A handheld pump for a bicycle has a volume of 2 in.3 when fully extended. You now press the plunger (piston) in while holding your thumb over the exit hole so that an air pressure of 45 lbf/in.2 is obtained. The outside atmosphere is at Po, To. Consider two cases: (1) it is done quickly (∼1 s), and (2) it is done slowly (∼1 h).
a. State the assumptions about the process for each case.
b. Find the final volume and temperature for both cases.
a tower is surrounded by a wall that is 10 m high and 30 m away from the base of the tower. compute the length of the shortest ladder that can stand outside the wall and lean against the tower.
You plan to use a tank of total volume V= 10 m3 to remove a contaminant at concentration Cin = 1 g/m3 from a waste stream with a flow rate of Q = 1 m3/h. The reaction is first order with a rate constant k1 = 0.5 h-1.
water is pumped into an irrigation pond at 250 gal/min for 24 hours. the pond area is 2500 square feet. Determine the depth of water in the pond .Provide answer in ft and m
From two observation wells 200 m apart, theobserved water table elevations are 11 and 7 m measured form the bottom of the stratum. Determine the discharge per unit width of the aquifer.
If cables BD and BC can withstand a maximum tensile force of 20 kN, determine the maximum mass of the girder that can be suspended from cable so that neither cable AB will fail. The center of mass of the girder is located at pointG.
If the design speed of a multilane highway is 60 mph, what is the minimum sight distance that should be provided on the road if (a) the road is horizontal and (b) the road has a maximum grade of 5%? Assume the perception/reaction time is 2.5 seconds...
An activated sludge system operates at a flow rate (Q) of 400 m3/day with an incoming BOD (So) of 300 mg/L. Throughout pilot plant work, the kinetic constants for this system are determined to be Y = 0.5 kg SS/kg
After the sealant has had time to cure (a week or so), remove the tape and spacer and test the joint by pulling and twisting it to fi nd out how elastic it is and how well the sealant has adhered to the substrate.
A 5 km2 lake does not have a defined input but receives runoff from its watershed (25 km2). The area receives 60 cm/yr in precipitation. Evaporation from the lake surface is 10 cm/yr with watershed evapotranspiration of 20 cm/yr.
Objective: This homework assignment is to help you think about the Incident at Morales video. There isn’t a single “right answer” for the questions. These questions are intended on helping you think about the video1. List the ethical issues you..
What are Engineering Societies based upon the research? List at least 10 discipline specific engineering societies along with their website addresses.
a concrete cylinder having a diameter of 6 in and a gauge length of 12 in is tested in compression the results of the test are reported in the table as load vs contraction. Draw the stress strain diagram using scales of 1 in=.5ksi
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