Which of the following is the same for all kinds of electromagnetic waves?
What is the velocity of a wave if the distance between the crests is 8 ft and 20 waves go by every 10 seconds?
A) 32 ft/sec
B) 16 ft/sec
C) 8 ft/sec
D) 4 ft/sec
E) 160 ft/sec
Which of the following is associated with 440 Hz?
A) middle A musical note
B) an AM radio station
C) an FM radio station
D) a television station
E) high C musical note
Bats navigate by emitting high pitched sound waves and
A) killing all the moths within 10 meters.
B) attracting various insects toward the sound.
C) listening for an echo.
D) calculating wave crests per second.
E) hoping humans do not hear them.