Light of wavelength 550 nm in air is found to travel at 1.96 × 108 m/s in a certain liquid. Determine the wavelength of the light in the liquid
A)
550 nm
B)
442 nm
C)
359 nm
D)
281 nm
E)
303 nm
C
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Which of the following places is not generally considered a potential home for life in our solar system?
A) Jupiter's atmosphere B) Mars C) Europa D) Titan
When a gas is changed to a liquid, the gas
A) releases energy. B) absorbs energy. C) both of these D) neither of these
The force of gravity is the only one of the four forces felt on very large size scales. Which of the following best explains why the other forces don't play a major role on large scales?
A) The other three forces are all very short in range, and cannot be felt over large distances. B) The strong and weak forces act only on very small scales, and large objects tend to be electrically neutral and therefore don't feel an electromagnetic force. C) Gravity is by far the strongest force, so it simply dominates on large size scales. D) Effects of the strong and weak forces tend to cancel out effects of the electromagnetic force on large scales.
Suppose you electrically charge a transparency by rubbing it, and then hang the transparency, at rest, by a string in the center of a room. Except for the transparency and string, the room is totally evacuated of all matter
Neglecting any influences from outside the room, what kinds of fields would then be found at places inside the room but away from the transparency--for instance, at a point near a corner of the room? A) an electric field only B) a magnetic field only C) Both an electric and magnetic field D) No fields at all, because the transparency would create electromagnetic fields only within the transparency itself E) No fields at all, because there is nothing [no material object] at such a point