The frequencies of sound that carry farther in air are
A) low.
B) high.
C) ultrasonic.
D) none of the above
Answer: A
You might also like to view...
Metric system: How many nanoseconds does it take for a computer to perform one calculation if it performs 6.7 × 107 calculations per second?
A. 15 ns B. 67 ns C. 11 ns D. 65 ns
Why isn't space expanding within systems such as our solar system or the Milky Way?
A) Hubble's law of expansion applies only to the space between galaxies. B) We are so close to these systems that we don't observe their expansion. C) The universe is not old enough yet for these objects to begin their expansion. D) Their gravity is strong enough to hold them together against the expansion of the universe.
All four ring systems orbit the equators of Jovian planets outside their Roche limits
Indicate whether the statement is true or false
A temperature of 100 K equals which of the following?
a. 373°C b. 173°C c. –279°F d. 279°F e. –639°F