7. (Mass balance,A river with 400 mg/L of salts (a conservative substance)and an upstream flow of 25.0 m³/s receives an agricultural discharge of 5.0 m³/scarrying 2,000 mg/L of salts. The salts quickly become uniformly distributed in theriver. A municipality just downstream withdraws water and mixes it with enoughpure water (no salt) from another source to deliver water having no more than500 mg/L salts to its customers. What should be the flowrate mixture ratio F ofpure water to river water?

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in the carrying 2,000 mg/L of salts. The salts quickly become uniformly distrib river. A municipality just downstream withdraws water and mixes it with enough pure water (no salt) from another source to deliver water having no more than 500 mg/L salts to its customers. What should be the flowrate mixture ratio F of pure water to river water?

in the carrying 2,000 mg/L of salts. The salts quickly become uniformly distrib river. A municipality just downstream withdraws water and mixes it with enough pure water (no salt) from another source to deliver water having no more than 500 mg/L salts to its customers. What should be the flowrate mixture ratio F of pure water to river water?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

7. (Mass balance,
A river with 400 mg/L of salts (a conservative substance)
and an upstream flow of 25.0 m³/s receives an agricultural discharge of 5.0 m³/s
carrying 2,000 mg/L of salts. The salts quickly become uniformly distributed in the
river. A municipality just downstream withdraws water and mixes it with enough
pure water (no salt) from another source to deliver water having no more than
500 mg/L salts to its customers. What should be the flowrate mixture ratio F of
pure water to river water?

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