The frequency of a sound wave is 457 Hz. What is the period? a
0.0032 s
b 0.078 s
C 0.0010 s
d 0.0022 s

a sonic boom is a loud boom that breaks the sound barrier

explanation:

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.