2008年5月12日月曜日

last physics journal


wow, doc, wasnt that fast? this is seriously the last journal that we will be writing...and you dont have to read my stupid journals with crazy grammatical errors anymore lol. anyways, i was watching tokyo drift with my friends this weekend. one thing that came into my mind is, does that thing make you go faster? when you drift, the kinetic friction is acting on you to the max. but when you turn normally, you have difficulties turning due to centrifugal force. i think it depends on the speed you are going into the turn. if youre going to fast that it is so hard to turn normally, then drifting is better. its like that problem about satellites escaping speed. if that tangential velocity is too great, then the object would not form the circular path and instead end up going into the wall, in this case.

2008年5月5日月曜日

29


when i was microwaving the food, i wondered if we can apply the ideal gas law. for example, if you used one of those ziplock box thing, seal it tightly and throw it in the microwave and heated it, can we apply the law? since PV=nRT, and since microwave raises the temperature, the PV must go up along with the temperature. since the volume is kept constant, well...ideally, so then the pressure better go up. so if you stop and think, there is one awesome thing you could make. you could make an explosion with this! not that i tried this before but wouldnt it be kinda cool to see something like that? this could also be presented by a bag of popcorn. when you heat that, it expands. in other words, the volume goes up because the pressure goes up due to the change in kinetic energy.