* 에너지 및 진폭 : The energy of a mechanical wave is directly proportional to the square of its amplitude. A wave with a larger amplitude carries more energy.
* Frequency and Amplitude: For a given medium, the amplitude of a mechanical wave is directly proportional to its frequency. This means that a higher frequency wave will have a larger amplitude.
Putting it together: 파의 에너지는 진폭의 제곱에 비례하고 진폭은 주파수에 비례하기 때문에 기계적 파의 에너지는 주파수의 제곱에 비례한다는 결론을 합니다. .
예 :
Imagine two waves traveling through the same medium:
* Wave 1:Frequency =f, Amplitude =A
* Wave 2:Frequency =2f, Amplitude =2A
Wave 2 has twice the frequency of wave 1, and therefore twice the amplitude. Since the energy is proportional to the square of the amplitude, wave 2 will have four times the energy of wave 1.
키 포인트 :
* This relationship applies to all types of mechanical waves, including sound waves and waves on a string.
* The energy of a mechanical wave is also affected by the density of the medium it travels through.
* The energy of a wave is usually expressed in Joules (J).
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