​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?

sino pakasagot nito bibigyan ko ng 100 pts sa isang tanong ko mamaya
with solution dapat