ONLY HANDWRITTENThe BOD rate constant (K) for a river's BOD assimilation was determined to be2/day (base e). The BOD of the river after leaving a heavily populated town was determined to be50 mg/l. Determine the distance after which the rivers BOD would become 4 mg/l when the averagevelocity of river was 1 m/s. What would have been this 'K' value if thedistance would have been 300 km and state what K manifests.AB1 m/sec--

Answered: Image /qna-images/answer/d52e8794-f6cb-49d3-bb3a-cebbf0a0ae85.jpg

Answered: The BOD rate constant (K) for a river's…

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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Q/ Samples of water are tested for total dissolved solids (TDS). TDS is normally distributed. The following frequency distribution is obtained. TDS 2480 2440 2400+N 2360+R 2320 Frequency 23 35 40 22 21 What is the approximate probability that the TDS of any given sample is less than (2350+G)? R=(G+1+N) Note that N = 34 R=37 G=2
PEGN 251 Midterm Fall 2021 5. A very small drop of fluid 1 immersed in fluid 2 is sitting on a solid surface. Based on the image to the right, which of the following statements are correct? O is the contact angle of fluid 1 to solid surface relative to fluid 2 b. 0 is the contact angle of fluid 2 to solid surface relative to fluid 1 c. Fluid 1 is the wetting phase to solid surface relative to fluid 2 d. Fluid 2 is the wetting phase to solid surface relative to fluid 1 e. The pressure of fluid 1 should be higher than that of fluid 2 nearby The pressure of fluid 1 should be lower than that of fluid 2 nearby g. The pressure of fluid 1 is the same as that of fluid 2 nearby а. Solid f. 6. Equation p = Po + pg(h – ho) describes distribution of hydrostatic pressure in Any fluids b. Incompressible fluids c. Compressible fluids а. 7. An object can float both above water (specific gravity = 1.0) and oil (specific gravity = 0.8). What can you infer from Archimedes principle and balance of forces?…
A well in an unconfined aquifer was pumped at a rate of 900 m³/day. Drawdown was measured in a fully penetrating observation well located 85 m away. The following data were obtained: Time Drawdown Time Drawdown (min) (m) (min) (m) 41 0.128 1.17 0.004 51 0.133 1.34 0.009 65 0.141 1.7 0.015 85 0.146 2.5 0.03 115 0.161 4 0.047 175 0.161 0.054 260 0.172 6 0.061 300 0.173 7.5 0.068 370 0.173 0.064 430 0.179 14 0.09 485 0.183 18 0.098 665 0.182 21 0.103 1340 0.2 26 0.11 1490 0.203 31 0.115 1520 0.204 Find the transmissivity T, storativity S and specific yield Sy.
Write the simplified equation for estimating TSS as a function of Q. Determine the 2 parameters associated with this relationship if TSS is 89 mg/L at Q = 8 m 3 /s and TSS is 109 mg/L at Q = 12 m 3 /s? What will be the TSS if Q is 20 m3 /s?
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The reading of an automobile fuel gage is proportional to the gage pressure at the botoom of the tank. If the tank is 32 cm deep and is contaminated with 3cm of water. A.) If the tank is full of gasoline what should be the reading at the page in Pa? Use Ywater=9790N/m^3, Ygasoline=6670N/m^3 and Yair=11.8N/m^3 Choices: 1934,2839,3132,2134 B.) How many centimeters of air remains at the top when the gauge indicates full? Choices: 3.75,1.41,4.42,2.36 C.) If the tank is 0.5m^2 in area, calculate the volume of gasoline when the gage reads full Choices: 138 L,160L,145L,123L
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