Multiple Choice
A general rule for estimating the distance in kilometers between an observer and a lightning bolt is to count the number of seconds between seeing the lightning and hearing it,and dividing by
A) 2.
B) 3.
C) 4.
D) 5.
E) none of the above
Correct Answer:

Verified
Correct Answer:
Verified
Q93: The natural frequency of an object depends
Q94: A succession of 2-m long water waves
Q95: On days when the air nearest the
Q96: How many vibrations per second are associated
Q97: A sonic boom cannot be produced by<br>A)an
Q99: An acoustical engineer designing a music hall
Q100: Sound energy that is not reflected is<br>A)transmitted.<br>B)absorbed.<br>C)either
Q101: If you played music under water the
Q102: The reflection of sound is<br>A)reverberation.<br>B)an echo.<br>C)a rare
Q103: A floating leaf oscillates up and down