Astronomers sometimes make use of "neutrino telescopes," which are typically located deep underground. What are neutrinos?
A) a type of light-weight subatomic particle
B) a very high-energy form of light
C) a very low-energy form of light
D) a type of wave predicted to exist by Einstein's general theory of relativity
A) a type of light-weight subatomic particle
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In the Northern Hemisphere, winter shadows are longer because ________.
A. the Sun moves through the sky closer to the horizon B. the Sun is in the sky for a longer period of time C. the Sun is in the sky for a shorter period of time D. the Sun moves through the sky farther from the horizon E. None of these choices is correct.
What is the resolving power of the telescope?
A) the ability to make distant objects appear closer B) the ability to collect a lot of light C) the ability to detect very faint objects D) the ability to distinguish adjacent objects in the sky E) the ability to separate light into its component colors
A boat moves at 10.8 m/s relative to the water. If the boat is in a river where the current is 2.00 m/s, how long does it take the boat to make a complete round trip of 1 100 m upstream followed by a 1 100-m trip downstream?
a. 250 s b. 172 s c. 211 s d. 297 s e. 336 s
Water flows in the horizontal pipe shown in Fig. 13-6. At A the diameter is 5.00 cm and at B the diameter is 4.00 cm
The fluid in the manometer is mercury, which has a density of 13,600 kg/m3. The manometer reading h is 4.40 cm. What volume of water is flowing through the pipe per second? A) 0.0206 m3/s B) 0.0426 m3/s C) 0.00560 m3/s D) 0.372 m3/s E) 0.186 m3/s