What dimensions would you use for a booth-type hood if you

Question

What dimensions would you use for a booth-type hood if you wanted an exhaust rate of 1,000 cubic feet per minute and a capture rate of 100 feet per minute to capture organic vapors from a paint spray operation? Be sure to show your work. If you wanted to clean the air that you are capturing before exhausting it outside, what type of air cleaning device would you recommend and why? 
Support your choice with at least one reference. Your essay should be at least 100 words in length. All sources used, including the textbook, must be referenced; paraphrased and quoted material must have accompanying in-text citations.

You are evaluating heat stress in workers digging a ditch by hand to lay sewage pipes. You obtain the following average values over a two hour period: Natural Wet Bulb (NWB) temperature = 27.0° C, Globe Temperature (GT) = 32.0° C, and Dry Bulb (DB) temperature = 30.0° C. Which WBGT index would you use to evaluate heat stress for this operation? Calculate a WBGT value for digging the trench. What control methods would you suggest to reduce the risk of heat illness in these workers? Support your discussion with at least one reference. 
Your essay should be at least 100 words in length. All sources used, including the textbook, must be referenced; paraphrased and quoted material must have accompanying in-text citations

Compare and contrast the different types of tribometers. In your opinion which of the tribometers best represents the slip resistance of a surface? 
Your essay should be at least 100 words in length. You are required to use at least your textbook as source material for your response. All sources used, including the textbook, must be referenced; paraphrased and quoted material must have accompanying in-text citations.

The Heat Stress Index (HSI) uses the terms O (Oxygen required), M (Metabolism), R (Radiation) C (Convection), and E (Evaporation). Compare and contrast the terms. Provide an example of a control method that you believe would be effective in controlling heat stress related to each of the terms M, R, C, and E. Support your discussion with at least one reference. 
Your essay should be at least 100 words in length. All sources used, including the textbook, must be referenced; paraphrased and quoted material must have accompanying in-text citations

Compare and contrast the different types of barriers that might be used to protect openings in a floor at a production facility. What factors should an engineer take into account when designing one of these barriers? In your opinion, which type barrier would be most appropriate for an opening between all four floors of a facility that is designed to move material between floors using a crane located on the top floor? Support your discussion with at least one reference. 
Your essay should be at least 100 words in length. All sources used, including the textbook, must be referenced; paraphrased and quoted material must have accompanying in-text citations.