HERAT_LAB 2_30221483

Question: 1 How can you calculate BOD value? What happens if you have a higher BOD value? Differences between COD and BOD?   Subject: Environmental Engineering lab Note: Please write the answer in each part in word format

Given data:  Sigma x= 80 MPa  Sigma z = 10 MPa Tau y = 40 MPa

Consider the cross-sectional area shown in (Figure 1). Suppose that h = 90 mm Figure 25 mm---- 50 mm 150 mm ---25 mm 50 mm 25 mm 1 of 1 Part A Determine the location of the centroid for the cross-sectional area. Express your answer to three significant figures and include the appropriate units. ÿ= Value Submit LA Provide Feedback Request Answer Units ?

Q: How can you calculate BOD value? What happens if you have a higher BOD value? Differences between COD and BOD? subject: Environmental Engineering-ll (lab) program: BE-Civil Engineering

Civil Engineering 4. Estimate the |E*| values using Witczak's predictive model (|E*| in psi) using the following data: • Ai • VTSI • Temperature, °F • Frequency, Hz • % Retained 3/4 • % Retained 3/8 = 10.584 = -3.5321 = 68 = 10 = 10.0 = 40.0 •% Retained #4 = 60.0 • % passing # 200 •Gmb = 5.0 = 2.355 .Gb = 2.614 .% V. = 4.0 •% P, = 5.0

7. In a random sample of 106 social (or service) robots designed to entertain, educate, and care for human users, 63 were built with legs only, 20 with wheels only, 8 with both legs and wheels, and 15 with neither legs nor wheels. One of the 106 social robots is randomly selected, and the design (e.g., wheels only) is noted. a. List the sample points for this study. b. Assign reasonable probabilities to the sample points.

In this problem you are asked to investigate how much water a leaky faucet wastes in one week, one month, and one year. Perform an experiment by placing a container under a leaky faucet and actually measure the amount of water accumulated in an hour (you can simulate a leaky faucet by just partially closing the faucet). You are to design the experiment. Think about the parameters that you need to measure. Express and project your findings in gallons/day, gallons/week, gallons/month, and gallons/year. At this rate, how much water is wasted by 10,000,000 households with leaky faucets. Write a brief report to discuss your findings.

How can you calculate BOD value? What happens if you have a higher BOD value? Differences between COD and BOD?   Subject: Environmental Engineering lab Note: Please write the word format

Answer and solve the following problem.

For a certain civil engineering system, it is sought to maximize the benefits, which is given by the expression: Z=3x+5y. The decision variables are x (the amount of resource type 1 to be used) and y (the amount of resource type 2 to be used). • The amount of resource type 1 should be at least 3 units. • The amount of resource type 2 should be at least 3 units. The difference between the amount of ● resource type 2 and the amount resource type 1 should not exceed 6. • The total amount of resource types 1 and 2 should not exceed 12 units. a. Identify the obiective function for this problem. b. Identify and write the constraints. c. Provide a sketch graph for the constraint set. d. Clearly show the feasible region. e. Label all extreme points (or vertices) of the feasible region and indicate their coordinates. f. Solve the optimization problem.

Photographs at a scale of S are required to cover an area X-mi square. The camera has a focal length f and focal plane dimensions of 9 x 9 in. If endlap is 60% and sidelap 30%, how many photos will be required to cover the area for the data given below? S=1:6300; X = 6; f = 152.4 mm Express your answer as an integer. Number of photos = 17 ΑΣΦ ↓↑ vec

Project 1: Simply supported beams are usually used in structures due to their high stability and performance in resisting shear stress and bending moment. They are applied in variety of applications such as steel-frame used for cars supported beam theory. Your manager asked you to calculate the distribution of shear force, bending moment and stress due to bending for bridge modeled as simply supported beam shown in the Figure.I, this task is best achieved by performing the following required steps: 250 kN 40 kNim 20 KN/ 25 Figure.1: Simply supported beam Your tasks are as follows: 1- Construct free-body diagram (FBD) to show the reactions forces and moments, equivalent force of the distributed load. 2- Show FBD for each required section'cut and the intemal forces and moments. 3. Write the distribution functions of the shear force and bending moment for each cut in the beam. 4- By hand construct diagrams for the shear force and bending moment distributions. 5- Determine the values and…

Before solve the problem please read the question carefully and give me right solution according to the question

By using the given picture as a reference, please do safety and health concern for following substances: Ammonia Oxygen Glucose

One of the intrinsic properties of fluid behavior is its viscosity. Analyze the causes of viscosity in any named fluid and state whether or not they have lower or higher dynamic viscosity. Note - Please dont answer with chegg answers

Solve for the CBR given the following data. Just round off the final answer into 2 decimal places for simplicity.

A textile fiber manufacturer is investigating a new drapery yarn, which the company claims has a mean thread elongation of 12 kilograms with a standard deviation of 0.5 kilograms. The company wishes to test the hypothesis H0: µ = 12 against H1: µ < 12 using a random sample of n = 4 specimens. Calculate the P-value if the observed statistic is x = 11.5. Round your final answer to five decimal places. Show all the necessary solutions. P-value: Blank 1 Blank 1 Add your answer

The probability of T=50 year to occur within the next 70 years is? The probability of T=50 year not to occur within the next 40 years is? The probability of T=100 year not to occur within the next 30 years is?

Solve the following problem and show your complete solution

Determine appropriateness (Good OR Poor) of the given dimensions (from 1 to 15) shown in Figure below. If your answer is Poor, try to think about the reason and how to give a better dimension.  Please write your answer like this --> (1) Good / (1) Poor because....

Verify the following equation based on their definitions: WY sat Yw-W(Ysat - Yw) e= Vv Vs

The mean average of the numbers a, b, 8, 5, and 10 is 6, and the variance is 6.80. What set of the given numbers a and b that agree to the given mean average value and the variance of the population? i: a=0, b=7      ii: a=5, b=2,    iii. a=1, b=6,   iv. a=3, b=4               Subject: Applied Statistics

1. To test your understanding of this distinction, consider the following quantities listed below. Categorize each quantity as being either a vector or a scalar. Quantity Category 1. 5 m 2. 30 m/sec, East 3. 5 mi., North 4. 20 degrees Celsius 5. 256 bytes 6. 4000 Calories 7. 300 N 8. 3 m/s? 9. 60 kg 10. 500 lb

A certin college has 3000 students. If 2500 students from this college attend a lecture in arts and 1275 attend a lecture in science, find: a. the smallest number that could have attended both lectures b. the largest number that could have attended both lectures c. the number that attended at least one of the lectures if 1600 attended both attended lectures Illustrate in venn diagram

Give me the solutions of these questions, answers are:1. Answer: 155 mm 2. Answer: 243,032 mm3 3. Answer: 682kN

Q3. Refer to this figure,list down the three parameter that you can find from this chart. * Moody Diagram 0.1 0.09 Transition Region 0.08 0.05 0.04 0.03 0.07 0.06 0.05- 0.02 0.015 0.04 0.01 0.03 0.005 Laminar Flow 0.002 0.02 0.001 Material e (mm) 5x 10-4 0.015 Concrete, cos Concrete, new sooth Drwn tubing Glass, Plastic Penpex Iron, enst Sewen, old 0.25 2x10-4 0.0025 10-4 a s Complete Turbulence 5x10-5 0.15 0.01 3.0 Steel, mortar lined Steel, rasted Steel, structural or forged 0.025 Water mains, old 0.1 0.5 10-5 5x10-6 10-6 Friction Factor = AP. Smooth Pipe 10 10 eVd 10 104 105 107 10 Reynolds Number, Re Friction Factor Relative Pipe Roughness 5

2. A family transplanted a tree in their yard 100 years ago. When it was planted, the tree was 5ft tall. Over the 100 years, its growth rate was as shown on the plot below. How tall was the tree at the end of 100 years? dH dt [ft/yr] H time (years) 1.8 0 20 **** 70 100

Q 01:                                                                                                               Define lead and lag with examples. Differentiate between task dependent and resource dependent activities in primavera. Civil Engineering