feign_ignorence

I think this should be under 'Applied Chemistry' (?)

but one possible way (industrial) is:

the Claus process

I definately don't agree that some actors (or any actors) should be as exuberantly rich as they are, and filmmakers should take advantage of the ton of people who want to try to get into acting instead of rehashing flicks with the same boring actors...

However, actors are employed by demand in the hopes that they'll make the movie more profitible so i suppose this doesn't matter.

Also: Couldn't you have picked another actor to make this thread about? Nicolas Cage is a pretty decent in his movies... if you're gonna bitch, rant about Tom Cruise or some other twat!

What kind of loon would make a ring in the shape of a watch?

Thank you for enlightening me with this thread

pretty fun

i like the skyscraper game... gave up at 8 letter words though:doh:

they do help though: spacial recoginition, vocabulary, memorization, reasoning...etc

Regardless if you decide to choose a career that involves 'calculus'; i've always though it beneficial just to go through learning something because you 'can'.

What use is history to the majority of the students? Geography? Compulsory language courses?

We forget most of the stuff we learn in school that we don't complement with follow-up courses, but the process of learning certain things makes us more capable people, and trains our brains.

[math]

(x^2-3x+2)(\tfrac{1}{2}x^\frac{-1}{2})+(2x-3)(x^\frac{1}{2})

[/math]

[math]

(x^\frac{4}{2}-3x^\frac{2}{2}+2)(\tfrac{1}{2}x^\frac{-1}{2})+(2x^\frac{2}{2}-3)(x^\frac{1}{2})

[/math]

Multiply the terms through

[math]

(\tfrac{1}{2}x^\frac{3}{2}-\tfrac{3}{2}x^\frac{1}{2}+\tfrac{2}{2}x^\frac{-1}{2})+(2x^\frac{3}{2}-3x^\frac{1}{2})

[/math]

Group terms with the same exponent ie:[math]x^\frac{1}{2}[/math]

[math]

(\tfrac{1}{2}x^\frac{3}{2}+2x^\frac{3}{2})+(-\tfrac{3}{2}x^\frac{1}{2}-3x^\frac{1}{2})+x^\frac{-1}{2}

[/math]

Only have one of each 'type' of x

[math]

(\tfrac{1}{2}x^\frac{3}{2}+\tfrac {4}{2}x^\frac{3}{2})+(-\tfrac{3}{2}x^\frac{1}{2}-\tfrac{6}{2}x^\frac{1}{2})+x^\frac{-1}{2}

[/math]

[math]

(\tfrac{5}{2}x^\frac{3}{2}-\tfrac{9}{2}x^\frac{1}{2}+x^\frac{-1}{2})

[/math]

Reduced form:

[math]

\tfrac{1}{2}x^\frac{-1}{2}(5x^\frac{4}{2}-9x^\frac{2}{2}+2)

[/math]

[math]

\tfrac{1}{2}x^\frac{-1}{2}(5x^2-9x+2)

[/math] (done here)

If that ended up to be -2 instead:

[math]

\tfrac{1}{2}x^\frac{-1}{2}(5x^2-9x-2)

[/math]

It can be factored like this:

[math]

\tfrac{1}{2}x^\frac{-1}{2}(5x+1)(x-2)

[/math]

I think that's right.

I swore by graphical calcs all through high school and college (graphing is a great method for checking if answers are reasonable.)

 

Unfortunately at uni they only allow 3 calculators (none graphical), but the best of these is definately;

 

Casio FX 991 ES.

 

Can do matrices, complex arithmetic, numerical integration and solve sim eq. and quadratics.... These functions are a great help if you are one of those people (like me) who in exams throw away 20% of their marks from doing a "2+2=5"....

^-----Yes. You should check with your university (couse syllabus if you have access) before you purchase a calculator. Once you find out which types you can't use (more often than not you can only use what they tell you). (i recommend Casio991 for physics; usually you don't get to use calculators on math tests)

Wikipedia is generallly accurate but if you're serious about using the information presented you should click the sources at the bottom of the page...

I've always found teachers' disapproval to the 'use' of wikipedia to be unnecessary.

Need help with deciding career choices!

I am a 15 yr old who has now come to the time to choose a pathway for my senior school subjects/

I have a few careers in mind and i would like you to tell me what the common characteristics are of this career if you could possibly do it!

 

Medicine

 

Civil Engineering/Buisness

 

Landscape management

 

Environmental Science

 

Could you please help me out?

You should start by explaining what you actually think the above professions are and what they mean to you. You're only 15 so i wouldn't focus on 'choosing what you wan't to be' asmuch as trying to find out which field of study you love!

Take the time to research the prerequisites for the programs you think you might apply for (school guidance councillor) as well...

Regardless of which profession you decide to follow, try to include the following in your course selection (all are requisite to those 4 things you have listed except biology, but biology is fun): upper level math, physics, biology and chemistry. Economics, and law could help too.

[math](x^2-3x+2)(\tfrac{1}{2}x^\frac{-1}{2})+(2x-3)(x^\frac{1}{2})[/math]

[math]

(x^\frac{4}{2}-3x^\frac{2}{2}+2)(\tfrac{1}{2}x^\frac{-1}{2})+(2x^\frac{-6}{2}-3)(x^\frac{1}{2})

[/math]

 

Same base = add the exponents. Add the exponents by putting both x^ into the same denominator (in this case 2 on the bottom).

 

For example:[math] (x^2)(\tfrac{1}{2}x^\frac{-1}{2}) -> (x^\frac{4}{2})(\tfrac{1}{2}x^\frac{-1}{2})[/math]

 

it becomes [math](\tfrac{1}{2}x^(\tfrac{4}{2}-\tfrac{1}{2}) => \tfrac{1}{2}x^\frac{3}{2}[/math]

 

Its much easier to understand if you write it on paper!

Thanks for that link for LaTeX

Lets try this again!

I hope my explaination makes a bit more sense now...

How do you expand using square roots? I haven't come across that before

(x^2-3x+2)(1/2x^-1/2)+(2x-3)(sqrt x)

[(x^4/2)-(3x^2/2)+(2)][(1/2)(x^-1/2)]+[2x^-6/2][x^1/2]

Its a bit hard to show using text, but its just basic exponent multiplication.

Same base = add the exponents. Add the exponents by putting both x^ into the same denominator (in this case 2 on the bottom).

For example: (x^2)((1/2)(x^-1/2) -> (x^4/2)((1/2)(x^-1/2))

it becomes (1/2)(x^[4/2-1/2] => (1/2)(x^3/2)

Its much easier to understand if you write it on paper!

How do I differentiate this?

 

(x^2-3x+2)(sqrt x)

 

What i did was this:

 

(x^2-3x+2)(1/2x^-1/2)+(2x-3)(sqrt x)

 

But what is the next step?

Expand and simplify

"To fight for justice anywhere is to fight injustice everywhere" -unattributable

Site worked.

Hard to even determine the gender of some of those people given the closeness..

I rated about 12 women before i exited the browser out of guilt for rating these ladies so poorly:(

edit: also theres a girl in there with a piece of plastic nailed through her nose and looks like she should really seek medical attention

Any help on the above will be appreciated!

You should know what drift velocity is from your textbook.. if you don't then using maths to explain the proportionality between Vd and I wouldn't help much!

Look out for the words: conductivity, current, current density, and electron mobility and you should find the answer you seek!

Hi. I need to draw a diagram to show the process of alloying any two metals.

What level of schooling are you? Are you to show the physical process of alloying or the chemical changes and steps required?

A phase transformation diagram might be a little bit to advanced...

If your picture is just meant to be simple you draw:

metal A + metal B + heat = metal C

Metal A is almost always in excess..the whole process can be preformed under various heat treatments, isothermal transformations, etc

http://en.wikipedia.org/wiki/Heat_treatment

"My main focus is other galaxies with possible life and The Arecibo Message/reply."

Yes.. that is a bit broad. It might help to explain whether your essay is trying to mark an argument, explain something, or another thing entirely.

If your subject is argumentative, it might help to browse this forum (and many others) on this subject or any thread like "Do you believe in aliens?" and search for the really smart guy's long detailed post countering hundreds of posters drawing on dozens of fields of research...

Hmm... this is what i did:

Set x as an independent variable representing the volume of grape juice that reacts to produce ethanol.

Use the given volume percentage with stoichometric ratio, density, molar mass, etc to solve for x.

Verify that x gives y such that (in mL [ethanol volume]) y*100/(750-x) =~ 12%

Convert x to moles of CO2 and use PV=nRT to solve for pressure. (V=825-(750-x)-y???)

I got 0.29 atm but that isn't large so i'm assuming i did something wrong...

(Is this reasoning correct?)

Cool stuff

I found that movie incredibly boring; i could barely finish watching it...what exactly happened in the end????

Tricky bugger -- dancing robots...sheesh...

Secrety abduct rednecks and anally probe them, naturally.

...one Newton over one metre squared...

Whoops, this is how it should be...how do you edit posts on this forum?

edit:i guess you cant edit your first post then? pretty dumb

One day in Heaven Newton, Pascal, and Einstein, three distinguished physicists, decided to play a game of hide and seek.

Einstein starts to count: "1, 2, 3 ..."

Pascal runs off and hides under a cloud.

Newton uses a piece of chalk to draw a one metre by one metre box and stands inside.

"99, 100. Get ready, here I come!"

Einstein turns around and sees Newton just standing in plain sight.

"Ah ha! I've found you Newton," proclaims Einstein.

"No," says Newton, "I am one over one metre squared. You've found Pascal."