ihp604!

1. Choose the material that is brittle, a poor thermal conductor, a good thermal insulator, and can withstand high temperatures. a. Ceramics b. Composites c. Polymers d. Metals   2. Choose the substance with the greatest surface tension.   a. C9H20 b. C12H26 c. C6H14 d. C24H50   3. Condensation polymers A. Are deposited in molds by condensing vapors B. Also release a small molecule such as water when they are formed C. Usually are made from monomers containing one or more C=C bonds D. None of the Above

(3.3) What are some of the common sources of indoor noise pollution, and how can noise levels be assessed and controlled in buildings? Note that this question is asking for two aspects, one is noise assessment and the other one is noise control.

In the emission testing of motorized vehicles, the instrument used for gas engines is different from the instrument used for diesel engines. Why? What are the differences between the two instruments? Explain your answer within the context of the concepts and principles of fuels and combustion.

"Vehicle 1. Explain how each of these safety features is designed to protect you. a. anti-lock braking systems b. crumple zones c. side-impact beams d. seat belts 2. How many times more likely are people who don't wear seat belts to be injured than people who do wear seat belts? 3. Study Figure 13.10. What is the relationship between seat belt use and occupant fatalities? 4. Name three items you should regularly maintain on your vehicle to ensure your safety. CHECK Check your answers on pages 101 and 102 of the Appendix. Science 24 Module 4 • Section

As far as maintenance costs are concerned: O for high levels of maintenance commitment, breakdown maintenance costs exceed preventive maintenance costs. O for low levels of maintenance commitment, preventive maintenance costs exceed breakdown maintenance costs. preventive maintenance is always more economical than breakdown maintenance. breakdown maintenance is always more economical than preventive maintenance when the "full cost of breakdowns" is taken into consideration. O for low levels of mairtenance commitment, breakdown maintenance costs exceed preventive maintenance costs.

How do a unicycle and a twoaxle car react differently to road bumps?