Cecilia, Farhad, Candace

The frequency was 67.5hz. There were 5.5 waves. The wavelength was 2.79meters. To find the velocity you multiply 67.5hz and 2.79m and the answer you get is 18.83m/s.

Decibel Levels around the School- John and Hannah

Hallway: 26 Hz

Air Room: 89 Hz

Guy lifting weight: 71 Hz

Classroom Decibel Level: 30 Hz

In this extension, we determined decibel levels in different areas of the school. A decibel is a unit used to express how loud or soft a sound wave is. The decibel scale works by measuring how much frequency there is in a sound wave. Once again, this helps determine how loud or soft the sound is.

Standing Wave Photo Project John and Hannah

In this extension, we determined the speed for a standing wave. But in order to do this, we first had to take a picture. Now in order to do this picture, we just took a regular photo. Next we found the speed of the wave. Our frequency of our wave was 30 Hz. The wavelength was 2.5 m. We then multiplied that and got 75 m/s.

Candace, Cecilia, Farhad. Decibel levels around the school

A decibel is an unit for relative loudness. The decibel scale is a logarithmic scale. In order to move up by the same amount from any starting point, you don't add the same amount, you multiply.




















IMC pencil sharpener: 81.5 dB

Paper towel: 83.3 dB

Vent fan in nurse's bathroom: 60.9 dB

Door closing: 73.8 dB

Water fountain: 56.8 dB