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Determine the bending moment in a rectangular beam 2 in. wide and 4 in. deep, if the maximum bending stress is 20,000 psi.
Draw block diagrams of the unit operations necessary to treat the following wastes to effluent levels of BOD5 = 200 mg/L, SS = 100 mg/L, P = 5 mg / L (required for discharge into a sanitary sewer).
The carrier does not intend to offer weekend service. Therefore, the carrier will offer daily round-trip flights Monday through Friday. The following table presents passenger demand estimates and fares charged by competitors
A lake has a water level which is used to determine if watering restrictions need to be implemented for the neighboring city. Water levels are measured on a weekly basis, and restrictions are placed if the lake level drops below 1060 ft.
Knowing that the magnitude of P is 35 N, determine by trigonometry (a) the required angle a if the resultant R of the two forces applied to the support is to be horizontal, (b) the corresponding magnitude of R.
Draw the Bending Moment and Shear Force diagrams for the girder and calculate the maximum tension in the cable.
A gas mixture contains 1.5 × 10-5 mole CO and has a total of 1 mole. What is the CO concentration in ppmv
The maximum specific growth rate of the organisms driving this reaction is 5.0 days -1 and the growth rate is 0.54 day-1. The activated sludge tank has a volume of 40 m3 and the flow rate into it is 400 m3/day.
A CU triaxial test with σc = 20 psi is performed on a sand and a deviator stress of 80 psi fails the specimen. Previous tests revealed that the effective friction angle for this sand is 35°. Calculate the pore water pressure at failure.
A triangular shaped swale is to retain the runoff from a catchment with a design runoff rate of 0.01 m3/sec. The longitudinal slope of the swale is to be 1.5% with side slopes of 5:1 (H:V).
The column is composed of two materials, the inner is brass with a diameter of 100mm and the outer is aluminum with a diameter of 150mm. A rigid flat plate is placed on top to insure that both materials move together when compressed.
water flows into a weigh tank for 30 minutes. Calculate the increase in weight of the tank, if the discharge is 1.5 ft^3/s. The temperature is 50 F.
A hydraulic jump is observed to occur in a channel with a mild slope at a flow rate of 20cfs/ft. If the depth before the jump is 1 ft, determine the depth after the jump.
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