i need energy.
should i drink coffee?
its not good to always drink though.
but i had been drinking last week,
and it didnt help much anyway.
maybe it did, dont know lah.

man, i made a joke out of myself just now.
i thought joel and johann were like 18/19 years old.
when the FACT is that they are 24 and 27!
hahaha my goodness, i bet evan laughed really hard.
gee, they really looked young okay!
although i also didnt know joel was the older one.
cant blame me lah right. my guessing is bad. heh.
but still, its a good way of praising people that they look young.
wahahaha (:

ohm's law:
current passing through metallic conductor is directly proportional to potential difference when temperture is constant.
Q = I/T (c)
R = V/I (ohm)
E = W/T (v)
V = W/T (v)
R = rho x l/A
larger area, lower resistance; longer wire, greater resistance
R = R1 + R2 + ... (ohm)
1/R = 1/R1 + 1/R2 + ... (ohm)

concentration - when it increases, more particles occupying same volume, so they are closer together, collide more often, resulting in more effective collisions, therefore reaction faster.
pressure - when pressure is high, gaseous molecules are far apart, meaning that gaseous molecules at high pressure is more concentrated. the particles will collide more frequently, resulting in an increase in rate of reaction.
temperature - when temp. increases, particles absorb energy, thus moving faster and collide more often. there are also particles with energy greater than activation energy, resulting in more effective collisions, therefore reaction is faster.
particle size - the smaller the particle size, the larger the surface area for reactions to come in contact with each other. thus there is more effective collisions as particles collide more often, causing rate to increase
catalyst - adding catalyst lowers activation energy, thus increasing the rate of reaction, as a larger number of particles has sufficent energy for successful collisions.

wooo okay. i can sleep in peace tonight.