Answer to Question #294973 in Physics for zia

Question

1.     In general, the higher the frequency of the interfering waves,

A.   the higher the wavelength                               C. the greater the number of nodes and antinodes B. the higher the speed of the waves         D. the higher the amplitude of the waves 

2.     Which of the following materials should be use to make an ear protector against loud sound? 

A.   a material that produces sound                       C. a material that absorbs sound

B.    a material that transmits sound                       D. a material that amplifies sound 

Answer 1

1. Answer:  C. the greater the number of nodes and antinodes

2. Answer: C. a material that absorbs sound