I'm sorry I'm late readers! My dad came home this weekend so it slipped my mind. I cant believe that january is almost over! So this week is about the electric field, electric charges, and colulombs law. I'm going to talk abotu creating charged objects. How does it happen? Well, its from the addition or removal of electrons which create negative and positive charged objects. Above, is a picture of my friend Sophia. When she rubbed the pink balloon against her head, it created static (sticky) electricity, causing her hair the balloon to stick to each other. Rubbing the balloon and hair togehter facilitates the transfer of electrons by providing a greater level of contact between their molecules. Go try and rub a balloon on your hairy head and see how much static electricity you can create.

Tunnels

Hey there my dedicated followers! Its been a five day weekend and now I'm officially a second semester senior and done with college apps! Hello senioritis!!!!! So during this looong weekend I went to a beachhouse in laie with some friends. I realized why we're all so lucky to live in Hawaii and also why physics is sooo cool! I mean check this tunnel I made. Only with AP Physics would I be able to understand why the tunnel remains a tunnel and doesnt cave in. (by the way, the tunnel im referring to the little hole at the bottom of the picture) So you wanna know why?? Well it's simple, the weight of the sand above the tunnel is supported by the normal force of all the sand surrounding it. This is why its better to construct sand castles (or tunnels) with wet sand, because water acts as glue for the substance, sand. The water holds together the sand which creates a greater normal force than the weight from the sand above the tunnel. Also the compactedness of the sand is how it stay in a tunnel form. So, go make a tunnel at the beach to see for yourself!

Keeping out the Heat

Blogger, you have failed me! I posted a blog but you didnt. Anyways, I hope everyones first weeks of the new year have been awesome!!! So this weeks we're learning about thermodynamics and heat!! Fun, fun fun! :) The first law of thermodynamics is heat equals work done plus internal energy (Q=W+U).

There are many types of processes: isochoric, isothermal, and isobaric. That is when volume doesn't change, temperature doesn't change, and pressure doesn't change respectively. So you may be wondering whats up with the picture of the refrigerator above?? Well, in most cases, such as with heat engines, the amount of heat going in is greater than the heat going out. But since a refrigerator is generating cold air and maintaining a cool temperature, there is a negative net work because there is more heat going out than in. Weird, your refrigerator is doing negative work!

The World is Flat?!!!!

Happy New Year everyone!!! Its finally 2010!! Wooooowhoooo!!! So during this awesome winter break I read this terribly long book called The World is Flat by Thomas Friedman and here's how it went.

According to Merriam-Webster’s online dictionary, the definition of globalization is the development of an increasingly integrated global economy. In Thomas Friedman’s The World is Flat, the reason for the increasing “flatness” of the world is to due to globalization. Globalization is caused by ten reasons, but overall by the efficiency of new and upcoming technology, the high level of intellect from numerous individuals, and the growing economy. The world is flattening rapidly day by day as our power as an individual grows.

I had my doubts about this book but I would definitely recommend it to the world, or to people like me who are ignorant to the world’s changes and the effects of it. I learned that when I soon become exposed to the real world after college I have to be particularly cautious of whom I trust and make bonds with because nowadays people will do anything for money and power. I will also have to be able to fend for myself because there will always be someone better than me trying to take my spot, and it’s my job to “learn how to learn.” Politicians, leaders, and parents have to work at educating people on the new, flat world and what they need to thrive in it. We need leaders willing to inspire and explain.

As an individual, I feel it’s my duty to share my knowledge of the global economy, the environment, the relationship between the helpless and wealthy, the power of the human mind, and this book with everyone in order to inspire and allow for a more secure future.

The most important aspect of what I learned from The World is Flat is that we all need to gain the ability to use our imagination in a positive manner. With the strength of imagination, the four and a half billion individuals in this world can accomplish anything.

Friedman has the ability to explain his theories and beliefs so thoroughly and efficiently which is why I enjoyed reading his book. At first, his ideas may seem absurd but continue reading and you’ll probably end up agreeing with everything he points out.