4-20-09

The day started in mr. manning physics class. The first thing on the calendar was to check on the homework. The whole class went over problem number four together since it was a difficult problem. After that, mr. manning putted on a daily question of the day. It asked: “when playing a violin, the effect produced when the bow is drawn faster across the strings is?” the answer to the daily question was it would make a louder sound. Due to the bow was drawn faster, there will be more friction which creates more amplitude to the wave. Next on the calendar was the lab of the reflection of the waves. There were two situations. One was the two ends were held on the stationary barriers. The other was from one medium to another medium. The two situations had different results. The wave on the stationary barriers would bounces off the wall and went to the opposite side when the wave was first created. The wave that created with two different mediums which were the slinky and the string acted differently. The wave would be created on one side, and when hit the string, it would bounced off and traveled in the same direction of the wave was first created. Waves went from one large medium to a small medium have different frequencies and wave lengths. For the last ten minutes, mr.manning gave the class that period to work on their rollercoaster project. The bell rang and the whole class went out the room and went on to their next class.