The ____ has created second-party certification programs, Green Label and Green Label Plus, that provide guidelines for VOC content and off gassing of carpet and pad.
A. Carpet Manufacturing Association
B. Association for Carpet and Rug Manufacturers
C. National Flooring Institute
D. Carpet and Rug Institute
Answer: D
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Horsepower can also be expressed in units of ________
A) Foot-pounds per minute B) Pound-feet per second C) Foot-pounds D) Pound-feet
Refrigerant in the evaporator coil of an air conditioner changes from a liquid to a gas when hot air passes over it. The temperature of the refrigerant does not change. What concept does this demonstrate?
A) Latent heat B) Specific heat C) Convection D) Radiation
Which of the following statements is true?
A. heat travels from a cooler area to a warmer area B. when liquids evaporate, heat is released C. when a gas condenses to a liquid, heat is absorbed D. when a liquid boils, heat is absorbed
The thermal conductivity of a solid material can be determined using a setup similar to the one shown in the accompanying figure. The thermocouples are placed at 2.5 cm- intervals in the known material (copper alloy, K=52W/m·K) and the unknown sample as shown. The known material is heated on the top by a heating element, and the bottom surface of the sample is cooled by running water through the heat sink shown. Determine the thermal conductivity of the unknown sample for the set of data given in the accompanying table. Assume no heat loss to the surroundings and perfect thermal contact at the common interface of the sample and the copper.
