Saturday, October 20, 2007

self/course eval.


To be honest, I still feel a bit apprehensive about the course. It's still the most interesting science class that I've had so far because of all the labs. They always involve quite a bit of work, but at least the concepts are easier to understand. However, there is still a little bit of confusion here and there regarding certain concepts (like Work) that make me worried that the concepts will only get harder in the future. My goal in this class would be to get the A. So far, I've turned in all my work on time and have been trying to understand the concepts well so I think I have put out quite a bit of effort.

Monday, October 8, 2007

Ramen...

Today we all went driving around Kailua and stopped over at this place to eat ramen. While waiting for our order, I noticed that there were a bunch of lanterns and decorations hanging all over the place and figured they might have something to do with the things that we learned about forces. Since the hangings were at rest (due to the lack of wind outside and inside the restaurant), the basic forces on the hangings were their weight and the normal forces holding them up to the ceiling. Since the heart hanging inside was at rest, the net force must be 0N. This would mean that the weight of it (its mass x gravity) must be equal to its normal force. This is from Newton's first and second laws, for an object at rest must have a net force of 0N and for every force, there must be an equal and opposite force.