Hydrogen Energy

I think hydrogen energy is the most effective and overall best alternative energy source. Although not cheap, it's very difficult to find an alternative form of energy with a better cost-to benefit ratio. It's environmentally friendly, producing negligible emissions. It's also very abundant, and the processes for harnessing its pure from are relatively simple and fast when compared to some of the chemical and mechanical processes that accompany other forms of energy, like solar and wind. All sources of energy are a compromise - its our job to weigh the potential detriments against the benefits and decide which are worth dealing with their disadvantages. To me, hydrogen energy fits that criteria the best.

Blog Post #3

At the Homecoming game on Friday, there were a lot of examples of projectile motion. Every time the ball was thrown or kicked, it moved in both the positive X and Y direction. If I were to draw vectors, vector X would be pointing forward and vector Y would be pointing up. At the top of every arc motion made by the ball, it only moved in the X direction and there was no vector Y, because the ball stopped rising. Then as the ball completed the arc, vector X remained the same and vector Y reappeared, but pointing down, because the ball was traveling forward and falling at the same time.

Blog Post #2

I went to my mom's cycling race this weekend. It's difficult to identify constant velocity/acceleration by just looking at the cyclists as they speed by, so when we got home, my mom and I looked at her Garmin bike computer, which tracks her distance, time and the relationships between them. In the first half of the 30 kilometer race, her Garmin showed that the time it took her to travel every kilometer was more or less the same, which means she traveled at a constant velocity for 15 miles. In the last 15, she paced herself so that every 5 kilometers, her velocity would increase by a fixed amount (give or take a kilometer/hour). This steady increase in velocity demonstrates that her acceleration, the change in velocity, was constant during the last half of the race.

What is physics to me? How is it different from other sciences?

When I think of physics I think of a more concrete science than chemistry or biology. To me, physics means studying the physical world and how different forms of energy lend themselves to it. All of the sciences I've taken so far deal with matter - whether I was dissecting it, mixing it, or studying living forms of it. But I feel like physics will be different in that I'll learn more practical ways of recognizing the nature of it. I'll be able to predict the general behavior of physical matter that I encounter regularly, and be able to explain why they behave as such.
They say every science has its place in every day life, and that's technically true. But with chemistry and biology it's easy to ignore the science-y aspects. When it's so cold outside that you see your breath, you don't automatically think about it's only visible because of the chemical reaction that occurs when the moisture from your lungs, mixed the CO2 you're breathing out, reacts with oxygen at low temperatures. When someone sneezes near you, you don't immediately start thinking about how all of the macrophages, B-lymphocytes, and T-lymphocytes that make up your immune system would work together to take down a virulent antigen. But every time I see a yo-yo, I wonder what the hell is going on. Whenever I think about space (which is a lot), I wonder just how many other laws of physics are the opposite from those on Earth besides gravity, and I think about how integral physics is to the way the part of the world that we most commonly observe functions. Maybe it's because I haven't taken a class on it yet and so don't really know anything about it yet, but physics seems like it's going to be interesting.