1. A speaker vibrates at a frequency of 200 Hz. What is the period? 2. A pendulum makes 4 cycles in once second. What is its period? 3. A sine wave has a frequency of 2 Hz and a wavelength of 5 meters. Calculate its speed. 4. A sine wave has a speed of 50 m/sec and a frequency of 10 Hz. Calculate its wavelength. 5. A sine wave has a speed of 30 m/sec and a wavelength of 3 meters. Calculate its frequency. 6. A sine wave has a period of 2 secs and a wavelength of 4 meters. Calculate its speed. 7. The frequency of wave A is 250 Hz and the wavelength is 0.3 meters. The frequency of wave B is 260 Hz and the wavelength is 0.25 meters. Which wave is traveling faster?
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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