Resistance

I was reminded of Physics this weekend while running at the Great Aloha Run. My mom had accidentally signed me up to start the race with the walkers (pink tags) so, I was stuck in a huge crowd of slower people. This large crowd reminded me of the concept of Resistance. The path or cross sectional area (A) that I was running in seemed to be small for all these people (protons and electrons). Therefore with a smaller path for me to run, I found it much harder to advance or get to the finish. This is the same as in a wire when, the cross sectional area decreases, Resistance increases. There were also many people amongst or electrons moving around, representing the increase in temperature. As temperature or the number of e- moving around increases, Resistance increases. These two things increased my resistance in the run and I found it very difficult to cut through the large, moving, chaotic, crowd. The people pushing strollers and seniors/plumper people who stopped in the middle of the path also reminded me of protons. They were not moving in the path (wire) and pretty much just got in my way. This run or in my case walk, was fun and surprisingly reminded me of Physics.

BONUS: The balloon gains a charged area by gaining electrons from my hair (rubbing against it- swooshing sound in the beginning of the video) and the region rubbed becomes negative. When the charged region of the balloon is brought close to the water(H2O), it attracts the positive hydrogen (H+) of the polar water molecule. Because water is polar there are positive and negative charges so, when the balloon is brought close, the positve charges move to the side nearest the negative balloon region. This causes water to bend towards the negative balloon region.