Velocity potential function in the velocity field is given asØ=1axyt:a-Is the flow compressible ?(3p)b-Show the flow is steady ornot?(3p)c-In this flow field, find the resultant velocity and acceleration and their components at point A(8,8) at time t=1.(5p)d-Find the stream function for this flow.(7p)e-If the particle passing through the point (x0, y0)=(8, 8) is marked at time t=0, determine the location of the particle at time t=4s.(7p)

General properties of discontinuity planes and their effects on rock mass quality
also explain by specifying (such as the frequency of discontinuity and the effect of the number of sets on the block size).
please don't write in handwriting or let me read it.

Explain how to assess the benefits of using geosynthetics in road pavement.

Hello! I am learning abaqus currently, but I do not know what the Analytic field is! Can you tell me what is it? And how to use it with some examples! Thank in advance! I will thumb you up!

What are the modes of transformation of neighborhood.

in urban planning

explain the working principles of natural ventilation and explain passive design approaches suitable for cold climate

You have been employed by Challenger Constructions as their first Chief Information Security Officer (CISO). You have been tasked by the Board to conduct a review of the company’s risks and start to deploy security policies to protect their data and resources.

You are concerned that the company has no existing contingency plans in case of a disaster.

The Board indicated that some of their basic requirements for contingency planning include:

• A Recovery Time Objective (RTO) of 4 hours
• A Recovery Point Objective (RPO) of 6 hours

Based on these, you now need to determine:

• The Maximum Tolerable Downtime (MTD),
• The Work Recovery Time (WRT) and
• The system and data recovery priority

The Board expects that you will propose a Business Continuity Plan (BCP) for Challenger Constructions. The Board expects you to use as much of their existing resources as possible for the BCP, but understands that some additional resources may be required. Your BCP proposal must clearly state what additional resources, in terms of hardware, software and locations, are required.

Tasks:

You are to develop a proposal for a Business Continuity Plan (BCP) for Challenger Constructions in accordance with the Board's instructions above. Your proposed BCP must include:

1. An overview of the entire BCP,
2. A Business Impact Analysis
3. An Incident Response Plan
4. A Backup plan,
5. A Disaster Recovery plan,

In concreting the foundation of a high-rise building, describe the potential issues that could arise related to the following factors: the types of Portland cement, the Water to Cement (W/C) ratio, the most often used admixtures and the concrete slump test.

Specifically, how did the declaration passed by the Stamp Act Congress and The Declaratory Act passed by Parliament shift the entire focus/debate of discussion during the mid-1760’s? After that, was compromise possible? Why/why not?

2- How did the Nullification Crisis in 1832 (South Carolina) mirror the economic differences of north/south and the issue of states’ rights? How did these same issues bring about a final split of the union in 1861?

what different between triple pane windows and single pane windows and which one is better to use ?

Which of the following statement is correct?

Select one:

a) Adding less water than required in concrete results in higher workability

b) Adding more water than required in concrete results in higher compressive strength

c) Adding more water than required in concrete results in more voids and higher porosity

Design of a prestressed beam in the service limit state

Loads:

Service load p = 40 kN/m

Self weight from adjacent structures g1 = 30 kN/m

Self weight of beam g2 = 7 kN/m

Dimensions:
b = 300 mm, h = 900 mm, d = 800 mm,

L = 8000 mm Ap = 12 tendons a 100 mm2

Material data:
Tendons:

fp0,1k = 1550 N/mm2

fpk = 1700 N/mm2

fpk = 1700 N/mm2

p,max = min{0,8fpk ; 0,9fp0,1k}= 1360 N/mm2

Concrete:

B45, Exposure class XC1, XC2 etc, T = 20 C, RH = 50 %

It is assumed that the prestressing and the self-weight of the beam are applied three days after casting, while the self-weight of adjacent structures and service load are applied after 28 days. 50% of the service load is assumed to be long term load and the relaxation class may be set to 2 (i.e. low relaxation).