Solve or Explain the following problems or questions correctly. Write your complete solution in your notebook.
1. How fast is a wave moving if its wavelength is 12 meters and its frequency is 120 Hz?
2. The frequency limits of the range of human hearing are from 20 Hz to 20,000 Hz. If the speed of sound is 345 m/s, What are the wavelengths of these waves in meters?
3. During natural phenomena such as volcanic eruption or landslide, which do you prefer the one who saves or the one being saved? Why?
pakiayos po exam po namin yan
with solution
Answers & Comments
Frequency (f) and wavelength (λ) are joined by the equation fλ = c, where c is the speed of light. As the speed of light is constant, if you increase the frequency, the wavelength must decrease to maintain this equation and vice versa
Frequency response is the range of bass, mids and treble. In the example 20 to 20,000 Hz, the first number represents the bass end of the spectrum while the second number represents the treble end. 20 to 20,000 Hz is generally accepted as the audible frequency range, this is the standard for most headphones.
Follow evacuation or shelter orders. ...
Avoid areas downstream of the eruption.
Protect yourself from falling ash.
Do not drive in heavy ash fall.
Answer:
ok na po sya nasagutan kona po
2nd acc koto