Question
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Unpolarized light passes through three polarizing filters. The first one is oriented with a horizontal transmission axis, the second filter has its transmission avis 35.5 degree from the horizontal and the third one has a vertical transmission axis. What percent of the light gets through this combination of filters? 11.2% 88.8% 77.6% 0.00% 22.4% For a fixed amount of gas at a fixed volume, if the absolute temperature of the gas is doubled, what happens to the pressure of the gas? The pressure of the gas becomes double the original pressure. The pressure of the gas becomes eight times the original pressure. The pressure of the gas becomes one half the original pressure. The pressure of the gas becomes four times the original pressure. An ideal gas is at a pressure 1.00 times 10 5 N/m2 and occupies a volume 2.00 m3. If the gas is compressed to a volume 1.00 m3 while the temperature remains constant, what will be the new pressure in the gas (assume the number of molecules remains constant as well)? 0.500 times 10 5 N/m2 4.00 times 10 5 N/m2 1.00 times 10 5 N/m2 2.00 times 10 5 N/m2 A 3.2-L volume of neon gas (Nc) is at a pressure of 3.3 atm and a temperature of 330 K. The atomic mass of neon is 20.2 g/mol. Avogadro's number is 6.022 times 1023 molecule s/mol, and the ideal gas constant is R = 8.314 J/mol-K = 0.0821 L-atm/mol- K. The mass of the neon gas is closest to 7.9 times 10-3 kg. 4.6 x 10-3 kg. 3.8 kg. 7.8 kg. 7.8 times 10 2 kg. An ideal gas in a balloon is kept in thermal equilibrium with its constant-temperature surroundings. How much work is done on the gas if the outside pressure is slowly reduced, allowing the balloon to expand to 6.0 times its original size? The balloon initially has a pressure of 645.0 Pa and a volume of 0.10 m3. The ideal gas constant is R = 8.314 J/mol middot K. -120 J -390 J -330 J -6.0 J During an isothermal process. 5.0 J of heat is removed from an ideal gas. What is the change in internal (thermal) energy of the gas? 0.00 J 2.5 i 5.0 J 7.5 J 10J The process shown in the pV diagram in the figure is adiabatic. isothermal. isochoric. isobaric. If 2.0 g of water at 0.00 degree C is to be vaporized, how much heat must be added to it? The boiling point of water is 100 degree C. the specific heat of water is 1.0 cal/g-K. its latent heat of fusion is 80 cal/g, and its latent heat of vaporization is 539 cal/g. 1100 cal 1100 kcal 360 cal 1300 cal 1500 cal A 400-g piece of metal at 120.0 degree C is dropped into a cup containing 450 g of water at 15.0 degree C. The final temperature of the system is measured to be 40.0 degree C. What is the specific heat of the meta L assuming no heat is exchanged with the surroundings or the cup? The specific heat of water is 4190 J/fkg-K). A) 1470 J/(kg middot K) B) 2830 J/(kg middot K) C) 3420 J/(kg middot K) D) 3780 J/(kg middot K) E) 4280 J/(kg middot K) A heal engine with an efficiency of 30.0% performs 2500 J of work. How much heat must be taken in by the engine in one cycle? 5830 j 8330 J 750J 1350J 7080 J
Explanation / Answer
1.c
2.a
3.c
4.d
5.a
6.a
7.b
8.c
9.a
10.b
