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vfiekz [6]
2 years ago
6

The influent BOD5 to a primary settling tank is 345 mg/L. The average flow rate is 0.050 m3/s. If the BOD5 removal efficiency is

30%, how many kilograms of BOD5 are removed in the primary settling tank each day?
Engineering
1 answer:
allochka39001 [22]2 years ago
7 0

The kilograms of BOD5 that are removed in the primary settling tank each day is  447.12 kg.

<h3>How to calculate the value?</h3>

The BOD5 removed in the primary settling tank each day will be:

= efficiency * influent * average flow rate*24*60*60

The average flow rate is 0.050 m3/s and the BOD5 removal efficiency is 30%,

Influent = 0.345 g/L = 0.000345 kg/L

BOD5 removed in the primary settling tank each day will be:

= 0.3*50*0.000345*24*60*60

= 447.12 kg

Learn  more about settling tank on:

brainly.com/question/27736862

#SPJ1

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Which of the following has special properties that allow forces and pressure to be distributed evenly?
Thepotemich [5.8K]

Answer:

Fluids

Explanation:

Fluids has special properties that allow forces and pressure to be distributed evenly within them.

  • Fluids are gases and liquids whose intermolecular forces of attraction are generally weak or non-existence.
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7 0
3 years ago
Four race cars are traveling on a 2.5-mile tri-oval track. The four cars are traveling at constant speeds of 195 mi/h, 190 mi/h,
Snezhnost [94]

Answer:

Explanation:

1) The number of times, the car with the speed of  195 mph will cross the given point is equal to 30 minutes divided by the time taken by car to cross the 2.5 miles.

0 .5*195/2.5 = 39

Likewise, the car with the speed of 190 mph crosses the point 38 times; the car with the speed of 185 mph crosses the point 37 times

and car with the speed of 180 mph crosses it 36 times

here, the time-mean speed, vt is given below,

vt = (39*195 +38*190+37*185+36*180)/(39+38+37+38)

= 186.433 mph

and space mean speed is given by,

= (39+38+37+36)/(39/195+38/190+37/1850+36/180)

1) The number of times, the car with the speed of  195 mph will cross the given point is equal to 30 minutes divided by the time taken by car to cross the 2.5 miles.

0 .5*195/2.5 = 39

Likewise, the car with the speed of 190 mph crosses the point 38 times; the car with the speed of 185 mph crosses the point 37 times

and car with the speed of 180 mph crosses it 36 times

here, the time-mean speed, vt is given below,

vt = (39*195 +38*190+37*185+36*180)/(39+38+37+38)

= 186.433 mph

and space mean speed is given by,

= (39+38+37+36)/(39/195+38/190+37/1850+36/180)

=187.5 mph

2)  There would be only four number of observations when the aerial photo is given, therefore time mean speed, vt in that condition will be calculated as

Vt = 195+190+185+180/4

  = 187.5

Vs= 4/(1/195+1/190+1/185+1/180)

= 188.36 mph

2)  There would be only four number of observations when the aerial photo is given, therefore time mean speed, vt, in that condition will be calculated as

Vt = 195+190+185+180/4

  = 187.5

Vs= 4/(1/195+1/190+1/185+1/180)

= 188.36 mph

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4 years ago
The Ford Fusion Hybrid SE uses hybrid fuel technology with the latest in lithium-ion battery technology to deliver more power, c
stellarik [79]

Answer:

evaluative criteria.

Explanation:

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Opposition to current flow, restricts or resists current flow
BlackZzzverrR [31]

Answer:

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3 years ago
Given two input integers for an arrowhead and arrow body, print a right-facing arrow. Ex: If the input is 0 1, the output is
Lyrx [107]

For printing a right facing with input 01, define the class for right facing arrow and give the value with appropriate space using '%6d'  and then display the right facing arrow.

Further Explanation:

The code to print the arrowhead and arrow body is as follows:

Import java.util.Scanner;

//Define the method.

public class RightfacingArrow

{

//Define the main method.

public static void main(String[] args)

{

//Create an object of Scanner class.

Scanner object = new Scanner(System.in);

//Declare the variables.

int baseChar;

int headChar;

//Prompt the user to enter the input values.

baseChar = object.nextInt();

headChar = object.nextInt();

 

//Display the headchar in position 6 from the  starting.

System.out.printf("%6d ", headChar);

//Display the arrows.

System.out.println(baseChar+""+baseChar+""

+baseChar+""+baseChar+""+baseChar+""

+headChar+""+headChar);

System.out.println(baseChar+""+baseChar

+""+baseChar+""+baseChar+""+baseChar

+""+headChar+""+headChar+""+headChar);

System.out.println(baseChar+""+baseChar

+""+baseChar+""+baseChar+""

+baseChar+""+headChar+""+headChar);

//Display the headchar in position 6 from the  starting.

System.out.printf("%6d ", headChar);

}

}

Output:

If the input is 01, the output will be as below:

    1

0000011

00000111

0000011

    1

Learn more:

1. A company that allows you to license software monthly to use online is an example of ? brainly.com/question/10410011  

2. Prediction accuracy of a neural network depends on _______________ and ______________. brainly.com/question/10599832  

Answer details:

Grade: College Engineering

Subject: Computer Science and Enginnering

Chapter: Java Programming

Keyword:

Java, input, output, programming, statements, if-else, loops, print, scan. right facing arrows, body, main body, char, int, variables, scanner class, abstract class, constructor, desctructor

8 0
3 years ago
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