Civil and Environmental Engineering Answers

What is the steady-state radon concentration in the closed-up cellar with 0.05 ACH? What is the primary sink of radon now?

The ventilation rate in the cellar is decreased to 0.05 ACH in an experiment to see what concentration of ethylene will occur. Ethylene, which stimulates ripening, is being released at a rate of 7µg/hr by apples stored in the cellar. What is the steady-state ethylene concentration?

Write a technical document on any topic in ethics. You are to make references from other sources and cite them in your write-up. Your paper should have at least the following parts:

• Introduction

• Body

• Conclusion

You can add sub-headings based on your topic. Write between 2 to 5 pages

Below are examples of the ethical issues you can write on

1. Ethics and morality

2. Professional ethics

3. Ethical orientations

4. Intellectual property

5. Copyrights

6. Patents

7. Privacy

8. Computer crimes

9. Computer security

10. Piracy

11. etc

Given is the area in the 1st quadrant bounded by X^2=8y, the line x=5 and the x-axis. What is the volume generated by revolving the given area about a. x-axis b. y-axis

Find the volume generated by rotating the region bounded by line y=4 from x=1 to x=7, about the a. x-axis b. y-axis