Circuit fun

Finley got random stuff for our bull dog buck tricky tray thing. In my opinion most of the stuff sounds stupid. Our test is on Tuesday next week.

People asked about internal energy in the beginning of class. Internal energy is when things warm up or cool down and is represented as triangle Uint. If it cools down it is considered negative internal energy.

We then went over the 8 homework.
Meteorite question
The meteorite would warm up when it gets close to earth. It also would get faster. The earth would make it go faster. So the system would be just the meteorite.
In the beginning it would Kinetic energy. It would not have Grav. P. Energy because the earth is not part of the system. You must have earth in your system in order to have grav. pot. e. The earth would do work on the system and as the end result you would have a lot of kintic and internal energy. if it actually hit the earth it would only have internal energy.

Sky diver question.
For the intial part of the bar chart we put just alot of grav. p. e. There was no work and for the final we had the same amount of grav. p. e. as kinetic energy and alittle bit of internal energy.

We then went on the PhET web site.
http://phet.colorado.edu/
We then clicked play with sims.
We then clicked on physics on the left hand side
We then went on circuit construction kit DC only.
We then ran the program and we lit the light bulb.
I messed around with systen and i noticed that the more batteries I put on the brighter the bulb. After connecting about 10 bulbs my wire blew up!!!!
We had to draw our circuit in our notebooks. Then we had to explain how to make a circuit work and describe what you see. Then we had to explain why the lightbulb lit up.

HW Comments on blogs, and finish ques. above.
YS