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9. Through which one of the following mediums is the velocity of a sound wave the greatest? A. Steel B. Lead C. Water D. Air
Sound would travel fastest through lead.
Expert answered|cha97mw|Points 850|
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Asked 6/9/2012 2:07:02 PM
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The waste products of combustion leave the internal combustion engine through the A. crankshaft. B. cylinder. C. exhaust valve. D. intake valve.
Weegy: D. exhaust valve User: One degree Celsius indicates the same temperature change as A. one kelvin. B. 5/9 degree Fahrenheit. C. one degree Fahrenheit. D. 9/5 kelvin. Weegy: A. one kelvin. (More)
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Asked 6/8/2012 9:46:01 PM
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A temperature of 273 K is the temperature at which water A. evaporates. B. boils. C. freezes. D. lacks any moving molecules.
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Updated 6/8/2012 10:12:56 PM
1 Answer/Comment
D. freezes. A temperature of 273 k is the temperature at which water freezes.
Added 6/8/2012 10:12:56 PM
Which of the following cools the air in a household refrigerator? A. The transfer of heat to the evaporator due to compression of the liquid refrigerant B. The transfer of heat from the air to the compressor due to expansion of the gaseous refrigerant C. Reduction of the air temperature due to condensation of the gaseous refrigerant D. Absorption of the heat from the air due to evaporation of the liquid refrigerant
Weegy: Absorption of the heat from the air due to evaporation of the liquid refrigerant is what cools the air in a household refrigerator. User: 8. Liquid alcohol will change to vapor when its temperature reaches the A. boiling point. B. melting point. C. fusing point. D. freezing point. User: The amount of heat energy required to raise the temperature of a unit mass of a material one degree is A. a Btu. B. absolute zero. C. a Joule. D. its heat capacity. Weegy: B. A joule User: 10. Which one of the following substances is a liquid fuel used in rocket engines? A. Ammonia B. Potassium perchlorate C. Liquid oxygen D. Codium nitrate Weegy: B. Potassium perchlorate (More)
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Asked 6/8/2012 10:05:53 PM
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Unlike other kinds of liquids, volatile liquids A. flow rapidly at a relatively low temperature. B. evaporate rapidly at a relatively low temperature. C. ignite readily at a relatively low temperature. D. freeze readily at a relatively high temperature.
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Updated 6/8/2012 11:01:30 PM
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Answer is B. Unlike other kinds of liquids, volatile liquids evaporate rapidly at a relatively low temperature
Added 6/8/2012 11:01:30 PM
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