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a body of mass m kg attached to a spring moves with friction the motion is described by the second newtons law md2ydt2
determine the carburizing time necessary to achieve a carbon concentration of 035 wt at a position 2 mm into an
1upstream of a discharge point a stream has a discharge of 400 cfs and a bod5 of 125 mgl a pipe discharges 150 gpm of
a reaction in a batch system is assumed to be first order data listed below was collected determine the reaction rate
1a grain-size analysis for a uniform sand in a loose state indicated that the soil particle diameter corresponding to
an engineer is considering the development of a small wind turbine d125m for home applications the design wind speed is
a constant-head permeability test was conducted on a clean sand sample the diameter and length of the test specimen
1a spillway carries a discharge of 225 m3s with the outlet velocity of 15 ms at a depth of 2 m select an adequate usbr
1the total dissolved inorganic carbon tic of a sample of groundwater is 833 mm the temperature of the aquifer is 15c
an experimental rocket sled weighs 5200 ib abd is propelled by six rocket motors each with an impulse rating of 8600
the 1500kg car has a velocity of 30 kmh up the 10 percent grade when the driver applies more power for 8 s to bring the
a person who retires at age 62 can receive social security benefits of 1537 per month but by waiting for the full
1determine the normal depth in a trapezoidal channel with a bottom width of 50 ft side slope of 31 and a bed slope of
the hubert h humphrey metrodome in minneapolis opened in 1982 at a cost of 55 million to prepare for the footings et
a 68 kg woman is planning to bicycle for an hour if she is to meet her entire energy needs while bicycling by eating 30
a brayton cycle with a regenerator uses air as the working fluid the air enters the compressor at 283k and 01 mpa the
1air at 37 psi and 60of is being forced into a tire at a velocity of 180 fts through a frac14 in diameter opening the
a tank with a 3m diameter has an 8 cm orifice at the bottom the tank is currently filled with water to a height of 25m
consider a metal single crystal oriented such that the normal to the slip plane and the slip direction are at angles of
in a large university computing center on average there are 10 service calls per day a computer technician can handle
an 8-inch water main with a flow rate of 14 ft3sec raises 100-feet at the beginning of the main the pressure is 110
1when conducting a leveling loop why is it important to have equal distances from the instrument for the backsight and
the initial piezometric head in a confined aquifer has a thickness of 116 m is 857 m above sea level a well with a
a ferric chloride dosage of 40 mgl and an equivalent dosage of lime are used to coagulate a watera how many pounds of
1an alloy is made up of 1994 lbm copper 204 lbm zinc and 42 lbm lead what is the composition in atom percent of the