Physics /12 Discussion!

[Obsidian Fl1ght]

the answer is 10^2 im pretty sure
prep for chem is good
P2 was alright, could be better.

"Fact" proved to be "Fact".

How?
Yeah... P2's usually always like that.

 

[Moi]

I'm there with u man.
I stared some... a few minutes left I guess... hurriedly stared some more... do random calculations or something... some formula... anything... think.... use those grey cells....
End result... C
aka 480N.
Whoop

Same here hahaa...the paper was lengthy and i had 1 min. left with three un answered questions including this..i went with a guess and felt 480 looks lik³ a good no. so i chose it hahahaa

 

[6Astarstudent]

"Fact" proved to be "Fact".

How?
Yeah... P2's usually always like that.

you mean how answer is 10^2? im confused

 

[Obsidian Fl1ght]

you mean how answer is 10^2? im confused

Ignore the factual proof of the "fact"

Yeah... how is 10^2 the answer?

 

[Cesar_malik]

Bakwas na kr

who said i solved the question i asked it from the guy beside me and luckily it got correct

bc
Fml

 

[6Astarstudent]

Ignore the factual proof of the "fact"

Yeah... how is 10^2 the answer?

so the model was 1/10 of original size
we know that young modulus = stress/strain
Y = (F/A)/(X/L) F=force, A=area, x=extension, L = original length
Y = FL/AX
X= FL/AY
so the dimensions of the load is shrinked by 1/10, so volume is 1/1000. density is the same so mass is 1/1000 and weight (force) is 1/1000
the original length is shrinked by 1/10
Area is shrinked by 1/100 because area = λr^2 and each r is 1/10 so 1/100
in short
F/1000
L/10
A/100
Y no change because same material

so X = (F/1000 x L/10 ) / (A/100 x Y) = FL/100AY
so original extension over new extension = 100

 

[Cesar_malik]

so the model was 1/10 of original size
we know that young modulus = stress/strain
Y = (F/A)/(X/L) F=force, A=area, x=extension, L = original length
Y = FL/AX
X= FL/AY
so the dimensions of the load is shrinked by 1/10, so volume is 1/1000. density is the same so mass is 1/1000 and weight (force) is 1/1000
the original length is shrinked by 1/10
Area is shrinked by 1/100 because area = λr^2 and each r is 1/10 so 1/100
in short
F/1000
L/10
A/100
Y no change because same material

so X = (F/1000 x L/10 ) / (A/100 x Y) = FL/100AY
so original extension over new extension = 100

6 A* damn he can not be wrong

 

[Obsidian Fl1ght]

so the model was 1/10 of original size
we know that young modulus = stress/strain
Y = (F/A)/(X/L) F=force, A=area, x=extension, L = original length
Y = FL/AX
X= FL/AY
so the dimensions of the load is shrinked by 1/10, so volume is 1/1000. density is the same so mass is 1/1000 and weight (force) is 1/1000
the original length is shrinked by 1/10
Area is shrinked by 1/100 because area = λr^2 and each r is 1/10 so 1/100
in short
F/1000
L/10
A/100
Y no change because same material

so X = (F/1000 x L/10 ) / (A/100 x Y) = FL/100AY
so original extension over new extension = 100

*thumbs up*

What I fail to comprehend is how are we supposed to think like this in the space of an hour?
Yeah. Ik it's not impossible (eg what you wrote) and though I HAD the general idea of the above, I admit time and pressure disallowed me from attempting the above.

Nonetheless, you've done it during the examination - that is commendable. Truly

 

[6Astarstudent]

6 A* damn he can not be wrong

thats actually just my goal
last year when I took my A levels I only got 4 A* 1A, 1B
6A* is my goal this year!

 

[h4rriet]

Yeah.
U?

Yup. It was good, wasn't it? Though I've done 3 wrong for sure, lol.

 

[Obsidian Fl1ght]

Yup. It was good, wasn't it? Though I've done 3 wrong for sure, lol.

Compared to physx... it sure was.
U over with ur pprs now? I still gotta face Bio tomorrow.

 

[h4rriet]

Compared to physx... it sure was.
U over with ur pprs now? I still gotta face Bio tomorrow.

I've also got Bio tomorrow! Hopefully it'll be a very good finish, inshAllah.

 

[Obsidian Fl1ght]

thats actually just my goal
last year when I took my A levels I only got 4 A* 1A, 1B
6A* is my goal this year!

That's it.
I hope u don't mind when I say you don't cease to impress me man.
And I seriously hope you won't mind when I ask you if I can bother u in the future. I've to say I decided to perform an "experiment" this year, by adopting a "laid-back" attitude after all these years.
And yeah - the only time I decide to take a risk in studies turns out to be... AS.
But I rejected the "experiment" before it got too late.
Still.
Best of Luck.
Bring down the walls.
You've got determination, perseverance...
And what subjects are you taking?

 

[6Astarstudent]

That's it.
I hope u don't mind when I say you don't cease to impress me man.
And I seriously hope you won't mind when I ask you if I can bother u in the future. I've to say I decided to perform an "experiment" this year, by adopting a "laid-back" attitude after all these years.
And yeah - the only time I decide to take a risk in studies turns out to be... AS.
But I rejected the "experiment" before it got too late.
Still.
Best of Luck.
Bring down the walls.
You've got determination, perseverance...
And what subjects are you taking?

Thanks
I'm taking Physics, Chemistry, Biology, English Literature, Mathematics with Stats, Further Mathematics

 

[Obsidian Fl1ght]

Thanks
I'm taking Physics, Chemistry, Biology, English Literature, Mathematics with Stats, Further Mathematics

Np
Stats - Is it interesting?

 

[6Astarstudent]

Np
Stats - Is it interesting?

yeah quite useful for playing tactical shooter games and for my part time job.

 

[Obsidian Fl1ght]

yeah quite useful for playing tactical shooter games and for my part time job.

Hahaha... now that's called applying what you learn to ur life.
If i am to take it in A2, is it possible to take stats composite in a year?

 

[6Astarstudent]

Hahaha... now that's called applying what you learn to ur life.
If i am to take it in A2, is it possible to take stats composite in a year?

yup its possible but I took stats 1 & 2 in 2 years for AS A2 level
I did take mechanics 3,4 stats 3,4 in 1 year though

 

[magnesium]

ppl em worried! viewing above discussion , makes me feel that gt might go high ! due to sme intelligent fellows !

 

[abrar]

Again, if anyone remmbrs the values provided in that - "air density" (No other way to put it), question, kindly tell.

1.2kg/m^3