Two moles of an ideal gas are placed in a container of adjustable volume. When measurements are made
a. the pressure is inversely proportional to the volume at constant temperature.
b. the temperature is directly proportional to the volume at constant pressure.
c. the temperature is directly proportional to the pressure at constant volume.
d. all the statements above are found to be correct.
e. only statements (a) and (b) are found to be correct.
d
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Unpolarized light of intensity I passes through four Polaroid sheets whose polarizing angles are rotated 30° from each other so that the last sheet is aligned at 90° to the first. What is the intensity of the light emerging from the fourth sheet?
What will be an ideal response?
A steel wire, 3.2 m long, has a diameter of 1.2 mm. The wire stretches 1.6 mm when it bears a load. Young's modulus for steel is 2.0 × 1011 Pa. The mass of the load is closest to
A) 28 kg. B) 24 kg. C) 16 kg. D) 20 kg. E) 12 kg.
The air inside a bicycle tire pump has 60 joules of work done on it as 20 joules of heat is conducted away from it. What is the change in internal energy of the air?
Study the sizes of the gas giants shown in the image above (the distance from the Sun increases from left to right), and choose the best explanation that accounts for their differences in size.
Choose one: A. Gas giants increase in size with increased distance from the Sun because more types of materials could condense farther out. B. Gas giants increase in size with increased distance from the Sun because the Solar Nebula was denser farther out. C. Gas giants decrease in size with increased distance from the Sun because the Solar Nebula was less dense farther out. D. Gas giants decrease in size with increased distance from the Sun because fewer types of materials could condense farther out.