Due to boredom, i might as well keep this blog going in the holidays.
Today i summarised Orbital Velocity, Re-Entry Factors, and changes in Launch acceleration.
Still have to do research on Scientist (Von Braun ?)
Hooray for making today productive.
Saturday, December 26, 2009
Monday, December 21, 2009
Friday, December 11, 2009
ag (1210) - Lettuce: nitrogen fixation
legumes fix nitrogen, well at least.. the rhizobium bacteria that attaches themselves to the roots does.
its a mutual relationship, the plan tgets nitrogen and the bacteria gets sugars and whatever from the plant, also an environment to live in.
legumes include plants like clover, medic (eg lucerne) and peas
its a mutual relationship, the plan tgets nitrogen and the bacteria gets sugars and whatever from the plant, also an environment to live in.
legumes include plants like clover, medic (eg lucerne) and peas
bio (1210) - MaB: [p] analysing xylem
check prac report to double check, celery was left to absorn coloured water for af ew adys, and today was cut up, transverse and longitudal (thinly) and looked at under a microscope.
what was seen was drawn. observed uncoloured phloem adjacent xylem and lignin wrapped around xylem in the longitudal thingo
what was seen was drawn. observed uncoloured phloem adjacent xylem and lignin wrapped around xylem in the longitudal thingo
Thursday, December 10, 2009
math (1209) - Locus: parabolas
apparently, if you make a point (focus, let it = S) within a parabola, and the distance between that point (let it = a) is the distance between the parabola and a line (x = + or - a as the equation depending) then.. the distance from that focus point, to a point on the parabola (P) is equal to the distance from that point, down to the point on the x = a line that shares the same x-coordinate as P, and that would be B.
confusing?
diagrams help.
basically.
PS = PB
use distance formula, get rid of square root
we get:
(x - 0)^2 + (y - a)^2 = (x - x)^2 + (y - -a)^2
x^2 + y^2 - 2ay + a^2 = y^2 +2ay + a^2
cancel out the crap..
x^2 = 4ay
just saying, this was a parabola with vertex at the origin.
to change this, just sub in the different coordinates into the distance formula.
likewise..
if the formula was eg
-x^2 = 4ay
it would be concave down, coz rearranging to make y the subject would make the x^2 negative
confusing?
diagrams help.
basically.
PS = PB
use distance formula, get rid of square root
we get:
(x - 0)^2 + (y - a)^2 = (x - x)^2 + (y - -a)^2
x^2 + y^2 - 2ay + a^2 = y^2 +2ay + a^2
cancel out the crap..
x^2 = 4ay
just saying, this was a parabola with vertex at the origin.
to change this, just sub in the different coordinates into the distance formula.
likewise..
if the formula was eg
-x^2 = 4ay
it would be concave down, coz rearranging to make y the subject would make the x^2 negative
ext2 (1208) - day 7: workshop 1
apparently the first workshop of two.
it was acutally good.
we got a lowdown on plagiarising and how things are marked. we're not compared to other people, we're compared to the marking criteria, despite having many or no other people diong our area of work.
interesting exercise today.. 10min of non-stop writing.
i dunno if it was meant to be creative or reflective, i ended up doing 2 scripts.
apparently they turned out pretty well. and like.. i wrote a page and a half approx in 10min, like a bit less. so i SHOULD be able to write 6 pages in 40min just like ms sproule said about ext1 people. i guess that's what happens when you write without thinking.
dont think.. thats one of the rules about creative writing, even essay writing.
any ideas.. just get it down.
well with creative writing, dont hold back.. let it all out, lose control, dont stop once your hand starts moving. there are other rules, check book for details.
met other people too, interesting to meet someone doing radio drama, the only one there, and i was the only one doing film.
i'm curious to see their story/ies though.
my journal was checked, im on the right track so far, and i handed in my statement of intention of my story, the one about two people and their parents getting married. in the end i decided the concept to be how differently people see things differnetly.
anyway.. its late.. im sleepy.. late post..
should hit the hay.
cant rmeember other stuff
it was acutally good.
we got a lowdown on plagiarising and how things are marked. we're not compared to other people, we're compared to the marking criteria, despite having many or no other people diong our area of work.
interesting exercise today.. 10min of non-stop writing.
i dunno if it was meant to be creative or reflective, i ended up doing 2 scripts.
apparently they turned out pretty well. and like.. i wrote a page and a half approx in 10min, like a bit less. so i SHOULD be able to write 6 pages in 40min just like ms sproule said about ext1 people. i guess that's what happens when you write without thinking.
dont think.. thats one of the rules about creative writing, even essay writing.
any ideas.. just get it down.
well with creative writing, dont hold back.. let it all out, lose control, dont stop once your hand starts moving. there are other rules, check book for details.
met other people too, interesting to meet someone doing radio drama, the only one there, and i was the only one doing film.
i'm curious to see their story/ies though.
my journal was checked, im on the right track so far, and i handed in my statement of intention of my story, the one about two people and their parents getting married. in the end i decided the concept to be how differently people see things differnetly.
anyway.. its late.. im sleepy.. late post..
should hit the hay.
cant rmeember other stuff
Wednesday, December 9, 2009
phys (1207) - Space: analyzing centripetal force
mr robson kept stressing how important it is to analyse things properly.
he went through a process of analyzing uniform circular motion.
first we describe their motion. (uniform and circular, duh)
they have a constant veloctity, but since their direction is changing, there must be an acceleration
F = ma, since there's acceleration, then its assumed there is a force.
that force we then describe.
in a hammer throw, its caused by tension, the pull of the thrower. in a car race, the reaction force is slightly tilted, but gravity is still straight down. add up the vectors and you have a force pulling in a direciton buddy. and with the moon orbiting the earth, its gravity that is pulling on the moon, the force that causes the acceleration
he went through a process of analyzing uniform circular motion.
first we describe their motion. (uniform and circular, duh)
they have a constant veloctity, but since their direction is changing, there must be an acceleration
F = ma, since there's acceleration, then its assumed there is a force.
that force we then describe.
in a hammer throw, its caused by tension, the pull of the thrower. in a car race, the reaction force is slightly tilted, but gravity is still straight down. add up the vectors and you have a force pulling in a direciton buddy. and with the moon orbiting the earth, its gravity that is pulling on the moon, the force that causes the acceleration
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