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An ocean outfall diffuser that discharges treated wastewater into the Atlantic Ocean is 5,000 m from a public beach. The wastewater contains 10^5 coliform bacteria per milliliter. The wastewater discharge flow rate is 0.3 m^3/s. The coliform first-order death rate in seawater is approximated 0.3 h^-1. The current carries the wastewater plume toward the beach at a rate of 0.5 m/s. The ocean current may be approximated as a pipe carrying 600 m^3/s of seawater. Determine the coliform concentration at the beach. Assume that the current behaves as a plug-flow reactor and that the wastewater is completely mixed in the current at the discharge point.
an ideal reheat rankine cycle with water as the working fluid operates the inlet of the high pressure turbine at 800kpa
Two carts with masses of 4.72 kg and 2.84 kg move toward each other on a frictionless track with speeds of 4.86 m/s and 3.97 m/s respectively. The carts stick together after colliding head-on. Find the final speed.
Consider a 1000-W iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-T6 (density = 2770 kg/m^3 and c(p)=875 J/kg C). The base plate has a surface area of 0.03 m^2.
if you switch the sign of all the components of a vector (this called"parity reversal "),what happens to the length of the vector. what happens to the direction of the vector
Wishing to use pine wood in a construction project a technician finds the density of Eastern White Pine is 0.373 g/cm^3 or g/cc. What is the wood's density in pounds per cubic foot
If the time required to pay for parking is exponentially distributed with a mean of 15 seconds, find the average time in system.
World population reacted 4billion in 197 Use the doubling time approximation (3.5) to estimate the exponential rate of growth that would produce those numbers. Use the exponential growth equation (3.6) to find the growth rate
A 2 foot tall multi-stage weir placed in a channel to cause the water to flow over the contracted weir at a height of 0.75 feet. There are 2 contractions and the original length is 6 feet. What is the discharge, in cubic feet per second
A combined pitot static tube has a coefficient of 0.98. Thedifferential head reading is 0.874m of water when it is positionedon the centreline of a pipe of constant diameter.
The dynamic viscosity of water at 20°C is 1.00 x 10-3 N-s/m2, and the viscosity at 40°C is 6.53 x 10-4 N-s/m2. Estimate the viscosity at 30°C.
The construction of a multi storied building started in January 1989 & was completed in June 1990. The total consolidation settlement of the building was estimated to be 8 cm.
A vertical curve is designed for 90 km/h and has an initial grade of +2.5% and final grade of -1.0 %. the PVT is at station 3+480. It is known that a point on the curve at station 3+440 is at elevation 75m. What is the stationing and elevation of the..
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