Which of these is a longitudinal wave
A) sound
B) light
C) radio
D) all of the above
E) none of the above
Answer: A
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Although it is highly unlikely to happen, suppose that we suddenly discovered that all these years we'd been wrong about the distance from Earth to the Sun, and it is actually 10% greater than we'd thought. How would that affect our estimate of the distance to the Andromeda Galaxy?
A) It would mean the distance to the Andromeda Galaxy is also 10% greater than we thought. B) It would not have any effect on our estimate of the distance to the Andromeda Galaxy. C) It would mean the distance to the Andromeda Galaxy is 10% less than we thought. D) It would mean that all the objects we've assumed are standard candles really are not good standard candles, and therefore that we have no idea of the true distance to the Andromeda Galaxy.
The value 1.38 × 10^-23 J/K is known as:
a. the universal gas constant. c. Avogadro's number. b. Boltzmann's constant. d. the molar specific.
Socrates died from ingesting the alkaloid named
a. nicotine. b. caffeine. c. quinine. d. coniine.
A small car meshes with a large truck in a head-on collision. Which of the following statements concerning the magnitude of the average force during the collision is correct?
A) The truck experiences the greater average force. B) The small car experiences the greater average force. C) The small car and the truck experience the same average force. D) The force experienced by each one is inversely proportional to its mass. E) The force experienced by each one is directly proportional to its mass.