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Q: 11.   The main purpose of the turbine in the turbojet engine is to      A. increase the velocity of the exhaust gases. B. drive the compressor. C. reduce the temperature of the exhaust gas. D.
compress the air.
A: The main purpose of the turbine in the turbojet engine is to drive the compressor.
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Original conversation
User: 11.   The main purpose of the turbine in the turbojet engine is to      A. increase the velocity of the exhaust gases. B. drive the compressor. C. reduce the temperature of the exhaust gas. D. compress the air.

Weegy: The main purpose of the turbine in the turbojet engine is to drive the compressor.
miss186|Points 746|

User: 12.   What is the value of the temperature 15 degrees Celsius in degrees Kelvin?      A. 475 degrees B. 455 degrees C. 258 degrees D. 288 degrees

Weegy: B. 288 degrees
wisbest|Points 2734|

User: 13.   A temperature of 273 K is the temperature at which water      A. boils. B. freezes. C. evaporates. D. lacks any moving molecules.  

Weegy: A. freezes
Roy0624|Points 609|

User: 14.   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. Absorption of the heat from the air due to evaporation of the liquid refrigerant D. Reduction of the air temperature due to condensation of the gaseous 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.
AngelInDisguise|Points 5101|

User: 15.   The process in which a substance changes from a gaseous state to the liquid state is      A. absolute zero. B. critical temperature. C. evaporation. D. condensation.

Weegy: A. condensation. Condensation is the change of the physical state of matter from gaseous phase into liquid phase, and it is the reverse of vaporization.
migzptz|Points 7617|

User: 16.   Unlike other kinds of liquids, volatile liquids      A. freeze readily at a relatively high temperature. B. evaporate rapidly at a relatively low temperature. C. ignite readily at a relatively low temperature. D. flow rapidly at a relatively low temperature.  

Weegy: Unlike other kinds of liquids, volatile liquids: D. evaporate rapidly at a relatively low temperature.
andrewpallarca|Points 23844|

User: 17.   A temperature of 20°C is equivalent to approximately      A. 136°F. B. 68°F. C. –6°F. D. 32°F.  

Weegy: A. 68
christilynch|Points 90|

User: 18.   Heat from burning fuel warms the walls of the firebox section of the furnace in      A. a hot-water heating system. B. a compressor compartment. C. an evaporation system. D. a hot-air heating system.

Weegy: D. a hot-air heating system.
uxiali|Points 1590|

User: 19.   A quantity of a gas has an absolute pressure of 400 kPa and an absolute temperature of 110 degrees kelvin. When the temperature of the gas is raised to 235 degrees kelvin, what is the new pressure of the gas? (Assume that there's no change in volume.)      A. 854.46 kPa B. 1.702 kPa C. 510 kPa D. 3.636 kPa

Weegy: the answer is B. 854.46 kPa 854.46 kPa is the new pressure of the gas.
Shey091808|Points 863|

User: 20.   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: One degree Celsius indicates the same temperature change as: C. one kelvin.
andrewpallarca|Points 23844|

User: 21.   Which one of the following substances is a liquid fuel used in rocket engines?      A. Potassium perchlorate B. Ammonia C. Codium nitrate D. Liquid oxygen

Weegy: There are several possibilities. The largest NASA rockets used liquid hydrogen (with liquid oxygen as the oxidizer). Hydrazine is one of the more powerful fuels, but it is dangerous and difficult to handle. [ Some rockets use a version of kerosene, the same chemical used as jet fuel. ]
zareni|Points 30|

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Asked 7/23/2013 7:43:10 AM
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