Waves On Snaky

Hey this is Shelly and I'm the scribe for the day. In class we have gone through the questions in "Concepts-Development Practice Page Chapter 25: Vibrations and Waves", or work sheet 25-1 for short. For those who have missed this class here are the correct answers:

1) a. Wavelength = 6.7 cm
b. Amplitude = 1.5 cm
2) Frequency = 0.5 hertz
Period = 2 seconds
3) Statement 1: The period of a 440-hertz sound wave is 0.0023 second
Statement 2: A marine weather station reports waves along the shore that are 8 seconds apart. The frequency of the wave is therefore 0.125 hertz.
4) a. Frequency = 600Hz
b. Wavelength = 0.57m
5) a. Distance = 30m
b. The distance decreases
6) a. Wavelength = 30cm
b. The wavelength decreases
7) Speed = 2m/s
Period = 0.5s
8) Speed = 3m/s
Period = 0.5s
9) Automobile moves towards the listener, the sound of its horn = high pitched
Automobile moves away from the listener the sound of its horn = low pitched
10) Wave frequency

Then we Ms. K got the class (whats left of it) in groups of 3 and assign a lab about the transverse waves and the longitudinal waves that involves the slinky, and in tomorrow 's class we'll continue to work on the lab.

HOMEWORK: Wave Problems: questions 1 -5 page 12 in the handout (Grade 11 Physics: Waves in One Dimension)

Tomorrows scribe will be....... Jenny!