Can you please check my answers. My teacher gave me a list of 200 questions to study, but I lost the answer sheet. Can you please help me with these 23 Thanks
1. A silver bar 0.125 meter long is subjected to a temperature change from 200°C to 100°C. What will be the length of the bar after the temperature change? A. 0.124764 meter B. 0.00023635 meter
C. 0.00002363 meter D. 0.0000189 meter
2. When the molecules in a body move with increased speed, it's possible that the body will change from a
A. gas to a liquid.
B. gas to a solid.
C. liquid to a solid liquid to a gas.
3. If the absolute temperature of a gas is 600 K, the temperature in degrees Celsius is
A. 273°C. B. 327°C. C. 705°C. D. 873°C.
4. The main purpose of the turbine in the turbojet engine is to
A. drive the compressor.
B. compress the air.
C. increase the velocity of the exhaust gases.
D. reduce the temperature of the exhaust gas.
5. 20 cubic inches of a gas with an absolute pressure of 5 psi is compressed until its pressure reaches 10 psi. What is the new volume of the gas? (Assume that there's no change in temperature.)
A. 5 cubic inches B. 10 cubic inches
C. 40 cubic inches D. 100 cubic inches
6. Unlike other kinds of liquids, volatile liquids
A. ignite readily at a relatively low temperature.
B. flow rapidly at a relatively low temperature.
C. evaporate rapidly at a relatively low temperature.
D. freeze readily at a relatively high temperature.
7. A temperature of 273 K is the temperature at which water
A. boils.
B. lacks any moving molecules.
C. evaporates.
D. freezes.
8. Which of the following takes place in the combustion chamber of a gas turbine engine?
A. Fuel oil is stored with sufficient pressure.
B. Fuel oil is mixed with a proper portion of compressed air.
C. A mixture of fuel oil and compressed air is ignited.
D. Gases are cooled to a desired temperature.
9. How much heat energy is required to raise the temperature of 5 kilograms of coal from 20°C to 220°C?
A. 314 J B. 6,573 J C.1,314,718 J D. 4,187,000 J
10. One degree Celsius indicates the same temperature change as
A. one degree Fahrenheit.
B. one kelvin.
C. 5/9 degree Fahrenheit.
D. 9/5 kelvin.
11. 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.1.702 kPa B.3.636 kPa C. 510 kPa D. 854.46 kPa
12. A temperature of 20°C is equivalent to approximately
A. -6°F.
B. 32°F.
C. 68°F.
D. 136°F.
13. If the absolute pressure of a gas is 550.280 kPa, its gage pressure is
A. 101.325 kPa.
B. 277.280 kPa.
C. 448.955 kPa.
D. 651.605 kPa.
14. Which one of the following substances is a liquid fuel used in rocket engines?
a. Liquid oxygen
B. Ammonia
C. Potassium perchlorate
D. Codium nitrate
15. The density of water is the greatest at a temperature of
A. 0 K.
B. 4 K.
C. 273 K.
D. 277 K.
16. In a gasoline engine, the area in the cylinder head where the air-and-fuel mixture is burned is called the
A. piston.
B. cylinder.
C. combustion chamber.
D. intake valve.
11. 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.1.702 kPa B.3.636 kPa C. 510 kPa D. 854.46 kPa
12. A temperature of 20°C is equivalent to approximately
A. -6°F.
B. 32°F.
C. 68°F.
D. 136°F.
13. If the absolute pressure of a gas is 550.280 kPa, its gage pressure is
A. 101.325 kPa.
B. 277.280 kPa.
C. 448.955 kPa.
D. 651.605 kPa.
14. Which one of the following substances is a liquid fuel used in rocket engines?
a. Liquid oxygen
B. Ammonia
C. Potassium perchlorate
D. Codium nitrate
15. The density of water is the greatest at a temperature of
A. 0 K.
B. 4 K.
C. 273 K.
D. 277 K.
16. In a gasoline engine, the area in the cylinder head where the air-and-fuel mixture is burned is called the
A. piston.
B. cylinder.
C. combustion chamber.
D. intake valve.
17. How much heat is required to convert 0.3 kilogram of ice at 0°C to water at the same temperature?
A. 100,375 J
B. 167,292 J
C. 334,584 J
D. 450,759 J
18. Which of the following cools the air in a household refrigerator?
A. Reduction of the air temperature due to condensation of the gaseous refrigerant
B. The transfer of heat from the air to the compressor due to expansion of the gaseous refrigerant
C. The transfer of heat to the evaporator due to compression of the liquid refrigerant
D. Absorption of the heat from the air due to evaporation of the liquid refrigerant
19. Which one of the following temperatures is equal to 5°C?
A. 0 K
B. 41 K
C. 278 K
D. 465 K
20. Liquid alcohol will change to vapor when its temperature reaches the
A. boiling point.
B. fusing point.
C. freezing point.
D. melting point.
21. A temperature of 200°F is equivalent to approximately
A. 37.8°C.
B. 93.3°C.
C. 232°C.
D. 840°C.
22. A quantity of gas has a volume of 0.20 cubic meter and an absolute temperature of 333 degrees kelvin. When the temperature of the gas is raised to 533 degrees kelvin, what is the new volume of the gas? (Assume that there's no change in pressure.)
A. 0.0006 m3
B. 0.2146 m3
C. 0.2333 m3
D. 0.3198 m3
23 What is the length of an aluminum rod at 65°C if its length at 15°C is 1.2 meters?
A. 0.001386 meter
B. 0.00180 meter
c 1.201386 meters
D. 1.214855 meters
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