Post From Benofschool

Happy Holidays Everybody in my Physics Class. I typed this on my PSP :P XD

December 17, 2007

Hi it is me Benofchool,
Today we went over the Problem Solving Worksheet with the picture of the guy in the elevator.
Here are the answers:

If pictures do not come out clear click on the picture :)

After going over that we had a chance to complete the lab given to us on Friday and to complete a new worksheet. The lab and worksheet was to be handed in at the end of class.

That was all for today and the next scribe is going to be... Mary Ann

Working with the Speed of Sound

Hello, this is a new cycle for the scribes. Today in class we finished correcting the questions from last week. I will be showing the corrections later in the scribe. We also corrected the worksheet about the speed of sound that we received last week.
Okay here are the corrections for last week's work:

8a) Intensity is the energy transmitted past a given area per unit of time. It is also an objective measurement. Loudness depends on the amplitude of the wave and it is a subjective measurement.

b)Frequency is the number of vibrations per second and it is an objective measurement. While pitch is how high or low a sound is and it is a subjective measurement.

9. 20Hz to 20 000 Hz is the range of frequencies a human can hear and it is called the Audio Spectrum.

10a)529Hz - 524Hz = 5 Hz

b)t=1/f
...=1/5
...=0.2 seconds

Now here are the corrections for the worksheet about the Speed of Sound:





Okay those are all of the corrections we've done today in our Physics class. Homework for tomorrow is the worksheet that we received called Sound Waves. Our next scribe will be... ERICT. So until next time good luck in school and hope this helps. Bye Bye.

Transverse Waves with a Slinky

Hey, I'm Benofschool and I will be you scribe for today.

Today in class we all started on an experiment with slinkys. We used Slinkys to create transverse waves to test out a number of experiments by swinging the slinky between 2 people with another two timing and observing.. The experiments included seeing if the amplitude of the waves have a relationship with the speed of the waves, seeing if the amplitude and the speed remains the same throughout the wave. According to Ms.K this was a very frustrating experiment due to the morning class's complaints. The teacher was right. Timing the waves were really difficult do to coordination issues. Too bad we are humans, we cause human errors.

This concludes my scribe for today and homework is to finish the experiment sheet Ms.K gave us and it is due tomorrow.

The next scribe will be "Thang N."

Bye Y'all