Question

A machine produces compression waves in a spring that is 120 cm long by pulsing twice every second. The back and forth movement of the pulse creates compressed sections of the spring that are 30 cm apart and travel toward the other end of the spring.



Which property of the wave does the value of two per second describe?

Answer 1

Answer;  

The property of wave that value two per second describes is frequency.

Explanation;

• Frequency is defined as the number of waves/ crests per second.
• In our question, it is said that the spring pulsates twice every second. So the frequency of the spring is 2.
• Unit of frequency is the inverse of time.
• Since unit of time is seconds, the unit of frequency is 1/second.  i.e per second.