y'(1+x^2)=(1/1-x)-3xy find the general solution.

Discuss briefly activated sludge age in terms of treated effluent quality.

Write a report showing the processes of the St Mary's wastewater treatment plant.

The report should include:

- General information about the plant (place, purpose, treatment capacity)

- Simplified flow diagram of the plant (showing only the important treatment processes)

- Functions of the each process (a few lines for each)

- Operational and maintenance issues of 2 processes in the plant

- References

Explain the different events that led to the entry of the United States into both the First World War (1914-1918) and the Second World War (1939-1945). Also pay attention to what specific role the US played in bringing these two wars to an end.

The City of Pomona (CA) has a population of 152,361. According to the data from 2017 to 2019, the average day demand in Pomona is 611 liters per capita per day (LCD). A new residential complex is being constructed in Pomona. There will be 16 three-story non-combustible apartment buildings, with an estimated total number of residents of 300 living in this apartment complex. Each building will have the same floor areas as follows: first floor, 1600 ft2 (square feet); second floor, 1400 ft2; third floor, 1200 ft2. The proximity and exposure between buildings can be considered average (use default). Using default peaking factors, please estimate the water demand for this new residential complex.

Indicate whether the following statements are true or false:

- Total stations cannot be used to find the difference in elevation between points. (      )

- In circular curves, the station of point of tangency PT is the station of point of intersection PI plus the tangent distance T. (        )

- In total stations, distance measurements are affected by temperature. (      )

- For a simple circular curve the lower the degree of curve the smaller is the radius. (      )

- Contour interval is the horizontal distance between two contour lines. (      )

You are a Structural Engineer working in a structural repair and rehabilitation consulting firm. You have been assigned to provide the answers and solutions for the following job: “Some cracks were observed on a suspended reinforced concrete slab on an existing public building. As these cracks raised public concerns, the owner has decided to carry out a structural investigation into the cause of cracking to check the structural integrity and determine the remedial works to be done.” (a) Outline and explain the process of investigation that would be recommended to identify the causes of the cracks.

(b) State Four (4) possible causes of the cracks?

(c) Propose Three (3) suitable tests to estimate the in-situ concrete strength.

(d) From the investigation, it was found that the cracks are due to structural overloading. Recommend a method to strengthen the existing slab and suggest a method to repair the crack.

What is the Effect of septic tank leakage on shallow groundwater quality and its remedial measures?
I want assignment about this question.

Thank you for your answer.
Can you please explain to me the concept of chain length

Question 5. Classify the main rock types with their characterics features (also indicate main
subdivisions), and give examples for each one.

Question 3. a) Write the geological times with its colours and symbols
b) What are the meanings of geological times, give some examples, and explain
why it is important to know geological times.

Question 2. a) What are the differences between element, crystal and mineral? Draw the
simplified crystal system shapes.
b) Write the physical properties of minerals and mohs hardness scale.

Consider a freeway with two lanes and capacity of 2000 veh/h/lane, jam density of 60 veh/km/lane and a triangular fundamental diagram. Traffic is moving with the flow of 3000 veh/h and the space mean speed of 100 km/h. At 10:00 a.m., a traffic crash occurs that blocks one lane for half an hour. Using shockwave analysis, answer the following questions. a. Draw the space-time diagram with shockwaves and traffic states (trajectories not needed). [2 marks] b. At time t = 10:30 a.m., Jack enters the freeway via an upstream on-ramp, which is 20 km away from the accident location. Does Jack experience congestion? If yes, what time does Jack start driving at a lower speed? [3 marks]