Physics question

[SMOKEU]

I'm stuck on a question that I have to do for uni. I have a formula I have to work with which goes like this: p2 = p1 X v1 / v2

I need to make v2 the subject, as in v2 = ?

Any help with this would be appreciated.

[neels]

can anyone remeber how that bedmas thing goes, it's either...

P2=P1xV1/V2

=> V2xP2=P1xV1

=> V2=P1xV1/P2

or

P2=P1xV1/V2

=> P2/P1=V1/V2

=> (P2/P1)/V1 = V2

[Laava]

B1 + B2 = ?........... http://images.smh.com.au/ftsmh/ffximage/2009/06/17/bananasinpyjamas_narrowweb__300x373,0.jpg

[SMOKEU]

B1 + B2 = ?........... http://images.smh.com.au/ftsmh/ffximage/2009/06/17/bananasinpyjamas_narrowweb__300x373,0.jpg

............does it equal BJ?

[Cloggy]

I'm stuck on a question that I have to do for uni. I have a formula I have to work with which goes like this: p2 = p1 X v1 / v2

I need to make v2 the subject, as in v2 = ?

Any help with this would be appreciated.
If I remember correctly when you move an element to the other side of the = sign it reverses. So division become multiplication etc.
p2 x v2 = p1 x v1
v2 = (p1 x v1) / p2
Don't quote me on this though. Been a long time since I did this stuff.

Edit: Just double checked with substituting simple numbers into the equation and this is correct.

[Ntoxcated]

If A = B / C then B = A x C and C = B / A

So, if p2 = p1 x v1 / v2 then v2 = p1 x v1 / p2

Checked by plugging in some some numbers.

6 = 3 x 4 / 2 so 2 = 3 x 4 / 6

[Marmoot]

If I remember correctly when you move an element to the other side of the = sign it reverses. So division become multiplication etc.
p2 x v2 = p1 x v1
v2 = (p1 x v1) / p2
Don't quote me on this though. Been a long time since I did this stuff.

Edit: Just double checked with substituting simple numbers into the equation and this is correct.

You are correct.

Multiplication to division, and vice versa.
If A xB = C
then A = C /B
OR
If A /B = C
then A = C xB

Addition to substraction, and vice versa.
If A +B = C
then A = C -B
OR
If A -B = C
then A = C +B

Same goes with :
- Square and Sq.Root
- Integral and diferential

[DMNTD]

I need to make v2 the subject, as in v2 = ?

Right then...arguably V2's make the bestest sound out of all motor configurations. :shifty:

[Jantar]

I'm stuck on a question that I have to do for uni. ....
Uni? That is 3rd form level algebra.

P2 = P1 X V1/V2
Multiply both sides by V2
P2V2 = P1V1
Divide both sides by P2
V2 = (P1/P2) X V1

[Grasshopperus]

Yeah, that's 3rd form algebra

Check this link out; it's from the Khan Academy which host an unbelievable number of free online tutorials for most science and math related subjects. It's very good.


http://www.khanacademy.org/video/algebra--linear-equations-4

[Edbear]

If the form fits...

[slofox]

If I remember correctly when you move an element to the other side of the = sign it reverses. So division become multiplication etc.
p2 x v2 = p1 x v1
v2 = (p1 x v1) / p2
Don't quote me on this though. Been a long time since I did this stuff.

Edit: Just double checked with substituting simple numbers into the equation and this is correct.

Correct...

[pzkpfw]

Sounds complicated.

1234567890

[Oakie]

I was fine with maths until they started putting the alphabet in it. Never got it.
Oh, and in in the 33 years since I left school I've never needed it. (just as well).

[Grubber]

jeez dude.....and this is suppose to help you in later life how?
All a bit much for me i'm afraid!

[vifferman]

Oh, and in in the 33 years since I left school I've never needed it. (just as well).
I found just the opposite, and it had me bemused that they didn't put more effort into making maths more practical. F'rinstance, I found remembering trigonometry made it much easier when calculating dimensions when cutting out panels, when I knew some dimensions, and some angles, and needed to work out the other dimensions and angles. :niceone:

[SMOKEU]

I'm doing a bio physics course at AUT so I need to know how to do these things for my course.

[Jantar]

jeez dude.....and this is suppose to help you in later life how?
All a bit much for me i'm afraid!
Boyle's Gas law is very important for such careers as aviation, refrigeration, motor mechanics (yes, that includes motorcycles) etc. In fact aywhere where gas may be compressed and/or condensed.

[Jantar]

I'm doing a bio physics course at AUT so I need to know how to do these things for my course.
I'm interested in how you managed to get into a physics course without a basic understanding of algebra. As the course develops you are also going to require vector algebra and abstract algebra, so I would suggest that you not only use the help you get by asking here, but learn the how and why behind it. It will help you in the long run.

[SMOKEU]

I'm interested in how you managed to get into a physics course without a basic understanding of algebra. As the course develops you are also going to require vector algebra and abstract algebra, so I would suggest that you not only use the help you get by asking here, but learn the how and why behind it. It will help you in the long run.

I never learnt that kind of stuff at school.

[vindy500]

I never learnt that kind of stuff at school.

Did you not do 5th form?

[onearmedbandit]

I never learnt that kind of stuff at school.

I thought you were still at school?

[John_H]

I'm surprised that someone who is clever enough to study physics at a university level has swastikas all over his profile.

[SMOKEU]

Did you not do 5th form?

It was a long time ago.


I thought you were still at school?

I left school for a few years, now I'm back.


I'm surprised that someone who is clever enough to study physics at a university level has swastikas all over his profile.

It's an ancient Hindu and Buddhist symbol.

[John_H]

It's an ancient Hindu and Buddhist symbol.

More commonly associated with Nazis.

[Kickaha]

More commonly associated with Nazis.

Yes it is but I would think that is only because most people are ignorant of the history of the symbol and how long it was around for before it was used by them

So SMOKEU are you saying you use it for the religious association with Hinduism, Buddhism etc? I think there's a Tui add in there somewhere

[Tink]

can anyone remeber how that bedmas thing goes, it's either...




BODMAS = BRACKETS ORDER DIVISION MULTIPLICATION ADDITION SUBTRACTION

Not sure about Bedmas.... I think that is an overly huge amount of people in a bed together!:mellow:

[PhantasmNZ]

BODMAS = BRACKETS ORDER DIVISION MULTIPLICATION ADDITION SUBTRACTION

Not sure about Bedmas.... I think that is an overly huge amount of people in a bed together!:mellow:

BEDMAS is an appropiate mnemonic - see http://en.wikipedia.org/wiki/Order_of_operations

[SMOKEU]

More commonly associated with Nazis.

I do it to piss people off.


Yes it is but I would think that is only because most people are ignorant of the history of the symbol and how long it was around for before it was used by them

So SMOKEU are you saying you use it for the religious association with Hinduism, Buddhism etc? I think there's a Tui add in there somewhere

I'm only trolling.

[rustic101]

School; pfff,

What google don't know is not worth knowing.

I have the answer to anything at the tip of my fingers in seconds.

[John_H]

I do it to piss people off.

Good attitude. You could think about growing up instead? Just a thought :innocent:

[SMOKEU]

Good attitude. You could think about growing up instead? Just a thought :innocent:

Good things take time.

[Squiggles]

I was fine with maths until they started putting the alphabet in it. Never got it.
Oh, and in in the 33 years since I left school I've never needed it. (just as well).

Perhaps you never write it but conceptually i bet cha do everytime you're at the supermarket and see a buy 2 for $xyz special... :rockon:

[onearmedbandit]

I'm only trolling.

We know that, as you bring nothing new to the art of trolling, instead trotting out the same old tactics that were employed before you ever made it on to the 'net. Come up with something new, then we might be impressed.

[SMOKEU]

We know that, as you bring nothing new to the art of trolling, instead trotting out the same old tactics that were employed before you ever made it on to the 'net. Come up with something new, then we might be impressed.

Surprisingly enough, some people still take the bait.

[schrodingers cat]

You would not be missed here.
You contribute little but noise.
That is all.

[SMOKEU]

You would not be missed here.
You contribute little but noise.
That is all.

All you ever do on here is talk shit and abuse people for no reason other than to make yourself feel better.

[MsKABC]

I have the answer to anything at the tip of my fingers in seconds.

G'wan then - tell us the inner workings of a woman's mind then! Huh? Huh?

[Ocean1]

G'wan then - tell us the inner workings of a woman's mind then! Huh? Huh?

Shouldn't take long...

:shifty:

[SMOKEU]

G'wan then - tell us the inner workings of a woman's mind then! Huh? Huh?

I think that is one of those mysteries that no one can ever solve.

[Virago]

http://files.myopera.com/odigoblu/blog/1Clipboard01.jpg
. .

[rustic101]

G'wan then - tell us the inner workings of a woman's mind then! Huh? Huh?

Bugger while I was away expanding my mind Virago beat me too it. But you could also refer to:

http://www.kiwibiker.co.nz/forums/showthread.php/127373-Maybe-I-m-looking-at-it-too-simplistically

[John_H]

You would not be missed here.
You contribute little but noise.
That is all.

:laugh::laugh::laugh::laugh::laugh::laugh:

[Kickaha]

You would not be missed here.
You contribute little but noise.
That is all.

That is hardly fair, you're actually describing the majority of those on KB

[onearmedbandit]

Surprisingly enough, some people still take the bait.

Noobs, yep.

[Max Preload]

Uni? That is 3rd form level algebra.Fuck, I reckon! :shit:

[SMOKEU]

Fuck, I reckon! :shit:

It's really hard though!

[Max Preload]

More commonly associated with Nazis.Only through ignorance. There are many times more Hindus than there have ever been Nazis.

[Banditbandit]

Boyle's Gas law is very important for such careers as aviation, refrigeration, motor mechanics (yes, that includes motorcycles) etc. In fact aywhere where gas may be compressed and/or condensed.

Boyles Law ??? ... sheesh I have enough problem with New Zealand Law ..

[Banditbandit]

You would not be missed here.
You contribute little but noise.
That is all.

That's Harley Davidsons all over inn't