Thursday, June 28, 2007
Make a table of x and y components and add algebraically to find the magnitude of resultant components:
Rx= AxBxCx....
Ry= Ay+By+Cy...
After getting the total of the two components, square them then add.
(Rx)2 and (Ry)2
Then get the square root.
flew into your heart at [7:59 AM]
Graphical Method.
In using this method, we should use a scale. So we use graphical method simply because we can illustrate it by using a figure for example.
Steps:
1. Get first the vectors. You Should use a scale say for example 20 miles=1cm.
2. Then after getting it, draw the first vector. Then, connect the tail of the second vector to the head of the first vector then do the same as with the vectors.
3. Label the degree of angle and specify the directions.
4. With the use of formulas, it is now easy for you to get the magnitude and the direction of the vector.
please keep it mind that this method is only the approximate of the actual answer.
eka^-^
flew into your heart at [7:52 AM]
Tuesday, June 19, 2007
YOU MIGHT BE A PHYSICS MAJOR...
if you have no life - and you can PROVE it mathematically.
if you enjoy pain.
if you know vector calculus but you can't remember how to do long division.
if you chuckle whenever anyone says 'centrifugal force.'
if you've actually used every single function on your graphing calculator.
if when you look in a mirror, you see a physics major.
if it is sunny and 70 degrees outside, and you are working on a computer.
if you always do homework on Friday and Saturday nights.
if you know how to integrate a chicken and can take the derivative of water.
if you think in 'math.'
if you've calculated that the World Series actually diverges.
if you hesitate to look at something because you don't want to break down its wave function.
if you have a pet named after a scientist.
if you laugh at jokes about mathematicians.
if the Humane society has you arrested because you actually performed the Schrodinger's Cat experiment.
if you can't remember what's behind the door in the science building which says 'Exit.'
if you have to bring a jacket with you, in the middle of summer, because there's a wind-chill factor in the lab.
if you are completely addicted to PhysLink.com.
if you avoid doing anything because you don't want to contribute to the eventual heat-death of the universe.
if you consider ANY non-science course 'easy.'
if when your professor asks you where your homework is, you claim to have accidentally determined its momentum so precisely, that according to Heisenberg it could be anywhere in the universe.
if the 'fun' center of your brain has deteriorated from lack of use.
if you'll assume that a 'horse' is a 'sphere' in order to make the math easier.
if you understood more than five of these indicators.
if you make a hard copy of this list, and post it on your door.
a physics major?? how i wish.... hahaha... x.x
honestly, sometimes i do not understand the lessons in physics. at first, it was very interesting for me... i thought that, it's not that difficult for us to catch up with the lessons... but day after day its getting more complicated to me and most of my classmates.. they say that this is one of the very difficult subject in 3rd year....
flew into your heart at [6:07 AM]