CEE 357 Homework 6
Each problem is credited with 0.40 points.
Problem 1 (Textbook Problem 5.43) A 750-m section of a river runs parallel to a channel 1000
m away (see the figure below). An aquifer connecting the two has a hydraulic conductivity of 7.0
m/d
CEE 357 Homework 6
Each problem is credited with 0.40 points.
Problem 1 (Textbook Problem 5.43) A 750-m section of a river runs parallel to a channel 1000
m away (see the figure below). An aquifer connecting the two has a hydraulic conductivity of 7.0
m/d
CEE 357 Homework 3
Each problem is credited with 0.40 points.
Problem 1 A river water used as a drinking water source has a bicarbonate concentration of 72 mg/L and a
CO2(aq) of 4 mg/L. What is the pH?
Problem 2 (Textbook Problem 2.28) Calculate the pH of
CEE 357 Homework 4
Problem 1 (Textbook Problem 5.2) Incoming wastewater with BOD5 equal to 200 mg/L, is
treated in a well-run secondary treatment plant that removes 90% of the BOD. You are to
run a five-day BOD test with a standard 300 mL bottle using a m
CEE 357 Homework 3
Each problem is credited with 0.40 points.
Problem 1 Using the data for a dye flushed out (or advected) from a CSTR in the demonstration experiments,
determine the hydraulic residence time and the flow rate through the reactor. (Relevan
CEE 357 Week 8 Homework
Problem 1 (Textbook 6.15) A chemical analysis of a surface water yields the following data:
Ion
Ca2+
Mg2+
K+
Na+
ClSO42HCO3pH
Concentration, mg/L
90
30
72
6
120
225
165
7.5
(a) Determine the alkalinity expressed as CaCO3,
(b) Deter
CEE 357 Homework Week 9
Problem 1 (Textbook 6.30) A perfectly mixed aeration pond with no recycle (return line) serves as the
biological reactor for a small community. The pond receives 30 m3/day of influent with a BOD5 of 350 mg/L that
must be reduced to
CEE 357 Homework 4
Problem 1 (Textbook Problem 4.10, 10% of HW4 grade) Human exposure to radiation is
often measured in rems (roentgen-equivalent man) or millirem (mrem). The cancer risk
caused by exposure to radiation is thought to be approximately 1 fat
CEE 357 Homework 5
Each problem is given equal score in the overall grade
Problem 1 (Textbook Problem 5.30) A city of 200,000 people deposits 37 cubic feet per
second (cfs) of sewage having a BOD of 28 mg/L and 1.8 mg/L of DO into a river that has a flow
CEE 357 Week 7 Homework
Problem 1 (Textbook 6.4) (a) What is the terminal settling velocity of a particle with a specific gravity
1.4 and a diameter of 0.010 mm in 20C water?
(b) Would particles of the size in part (a) be completely removed in a settling
CEE 357 Homework Week 9
Problem 1 (Textbook 6.30) A perfectly mixed aeration pond with no recycle (return line) serves
as the biological reactor for a small community. The pond receives 30 m3/day of influent with a
BOD5 of 350 mg/L that must be reduced to
CEE 357 Homework Week 2
Each problem is credited with 0.33 points.
Problem 1 Using the data for a dye removed by granular activated carbon (GAC) in the
demonstration batch experiments, determine the apparent first order kinetic rate of this
reaction. Usin
Lecture Note COSC 421
(M.E. Haque)
1
TYPES OF FOUNDATIONS
Foundation Systems
Shallow Foundation
Deep Foundation
Pile Foundation
Isolated spread
footings
Wall footings
Combined
footings
Pier (Caisson)
Foundation
Cantilever or
strap footings
Raft or Mat
fou
Math 309 A&B
QUIZ 1
Winter 2017
1
Student ID Number:
Name:
t et
1. (a) When does the matrix P (t) = 2
have an inverse?
t et
Calculate the determinant of P (t), we have
detP (t) = (t t2 )et .
Its invertible if and only if the determinant is nonzero. So whe
Math 309A&B
QUIZ 1
Winter 2017
1
Student ID Number:
Name:
2t et
1. (a) When does the matrix P (t) = 2 t have an inverse?
t e
Calculate the determinant of P (t), we have
detP (t) = (2t t2 )et .
Its invertible if and only if the determinant is nonzero. So w
CEE 357 Homework Week 1
Each problem is credited with 0.4 points.
1. (Textbook, #1.2) Suppose the exhaust gas from an automobile contains 1.0% per
volume of carbon monoxide. Express this concentration in mg/m3 at 25C and 1 Atm.
2. The average concentratio
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Arranging a Marriage in India
SERENA NANDA
Sister and doctor brother-inlaw invite correspond-
ence from North Indian professionals only, for a
beautiful, talented, sophistica
North Seattle Community College
9600 College Way North
Seattle, Washington 98103
Course Syllabus
(Summer 2016)
Course ID and Title: ANTH 206 Cultural Anthropology, 5 credits
Class Location and Time: online at canvas.northseattle.edu
Instructor: Dr. Collee
Amber (Yang Guo)
ANTH 275
June 16, y
Geology 101 Report
For generations, the tobacco has tried to convince millions of people that smoking is
cool, sexy, and harmless. Tobacco use was viewed as widespread, through varied professional surveys that most res