8. The equation below shows the relationship of certain variables to the intensity of a sinusoidal wave in fluids, what quantity is represented by the symbol ρ? a. displacement amplitude b. angular frequency c. fluid density d. bulk modulus of fluid 22. Where should electric charges be in a conductor? a. They must reside entirely on the surface of the conductor. b. They must reside entirely within the conductor. c. They must reside outside the conductor. d. Some of the charges may exist inisde and on the surface of the conductor. 23. What is the relationship between the electric field of a point charge and the electrical force being exerted? a. They are inversely proportional b. They are directly proportional c. They are directly-squared proportional. d. They are inversely-squared proportional.
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.
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