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a project is being considered benefits and costs are initial cost 100000 additional cost at the end of year 1 50000
a traffic signal is set for a 1-minute cycle the red and green phases on approach u201cau201d are as follows r30sec
1the power plant is burning natural gas with a nitrogen content of 5 at a rate of 6 kghr 95 of nitrogen in the fuel is
a person may demonstrate observable effects on the central nervous system when exposed to carbon monoxide at a
a- you are being asked to calculate the ph of a drop of pure rainwater at a temperature of 25oc the total air pressure
a chemical plant produces a process wastewater that contains a relatively high concentration of a small number of
d 150000 mol of aqueous phosphoric acid h3po4 solution contains 500 h3po4 by moles the solution is concentrated by
1determine the length of an interval of time such that the probability of at least one call in the interval is
a four-sided closed field traverse has the following angles a 81 degrees 22u201930u201d b 72 degrees 32u201930u201d c
a person with a mass of 200kg wearing snow skis is gliding down a long slope at an angle of 20 degrees each ski is
an electric power plant consumes 25 million gallons per day of cooling water to control bacterial growth slime 20 mgl
1a completely mixed flow reactor with a volume of v and a flow rate of q has a zero-order reaction dadt k where a is
an oil storage area abandoned 10 years ago had spilled oil on the ground and saturated the soil at a concentration of
1a soil deposit has a void ratio of 089 is the void ratio is reduced to 059 by compaction find the percentage volume
for construction of an embankment the soil is transported from a borrowed area using a truck which carries 55 m3 of
the plant manager has a decision to make she needs to reduce the concentration of salt in the 8000- gallon tank from
1prove that the smallest angle of any triangulation of a convex polygon whose vertices lie on a circle is the same this
1ethane gas c2h6 at 25c is burned with 150 theoretical air at 500 k and 1 atm find the heat transfer in kjkmolfrom a
sitting on the deck one evening watching for that pesky bunny jon and his brother see a twig floating down from an
1a small aircraft a is about to land with an airspeed of 80 mihr if the aircraft is encountering a steady side wind of
a trapezoidal channel is to design to carry a discharge of 75 m3s at maximum hydraulic efficiency the side slope of the
a pressurized steel tank has a radius r06m a wall thickness t18mm and an internal pressure p of 28 mpathe steel has a
a rubber ball is inflated to a pressure of 65 kpa at that pressure the diameter of the ball is 240mm and the wall
1a large spherical tank contains a gas at a pressure 420 psithe tank is 45 ft in diameter if the maximum stress that
an element of aluminiun in the form of a rectangular parallel pipe has a length a along the x axis of 55 inches a