Properties of sound
A sound wave is a mechanical wave (or mechanical vibration) that transit through media such as gas (air), liquid (water), and solid (wood).
Quality Of Sound
A sound or a sound wave is defined as the energy produced due to the vibrations of particles in a medium. When any medium produces a disturbance or vibrations, it causes a movement in the air particles which produces sound waves. Molecules in the air vibrate about a certain average position and create compressions and rarefactions. This is called pitch which is defined as the frequency of sound. The frequency is defined as the number of oscillations in pressure per second.
Categories of Sound Wave
People perceive sound in different ways, like a medico student takes sound as vibration produced by objects reaching the human eardrum. A physicist perceives sound as vibration produced by an object, which produces disturbances in nearby air molecules that travel further. Both of them describe it as vibration generated by an object, the difference is one talks about how it is received and other deals with how it travels and propagates across various mediums.
*a. Find the amplitude of each wave.*
*b. Find the wavelength of each wave.*
*c. Find the frequency of each wave.*
*d. What is the speed of wave A?*
*e. Which two waves have the same wavelength?*
*f. Which wave has the longest period?*
5. **What is the frequency of the following wave?**
6. **Which two points on the wave are in phase?**
7. **What is the period of a wave if 20 crests pass an observer in 4 seconds?**
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### Detailed Explanation of Graphs and Diagrams:
**Diagram for Question 4:**
- The graph shows three waves (A, B, and C) with their amplitudes and wavelengths marked on the vertical and horizontal axes respectively.
- A horizontal baseline (the x-axis) indicates the position "0" while the vertical lines indicate distances and time with markers at every 4 units.
**Graph for Question 5:**
- A wave pattern is plotted on a graph with time on the horizontal axis (ranging from 0 to 0.10 seconds) and displacement on the vertical axis (ranging from -0.01 meters to 0.01 meters).
**Diagram for Question 6:**
- A wave showing multiple points labeled A, B, C, D, E, and F.
- The task is to identify which points are in phase, meaning they reach their maximum and minimum displacements simultaneously and are aligned in their wave cycle.
These questions and](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd06d16a6-b252-499f-9b07-550f72ee7f9a%2F3492c563-34be-4c67-bf87-e2b88f58e5bc%2Fcwt5uvc_processed.jpeg&w=3840&q=75)
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