Physics p61

[EpicLol]

Also as for mass of ruler, we could do a preliminary estimation
Ruler would be 100cm long, perhaps 4cm wide and prolly 0.5cm thick
This would give vol. of 200cm3
Density of wood tends to be ~0.5 (depending on type, anything between 0.3 to 1.2, but the ones more than 0.7 are less common)
So the mass = dxv=0.5*200=100g, sounds about right P:
I wrote 250g cause I'm stupid like that.

I wrote 50g...lol I should have written 100g....but I think 50 would be accepted...

 

[abdul aziz123]

hey guys i wrote that the rule may not be 100% horizontal leading to inaccuracy! i wish it is correct

 

[shalala]

What did u write for the 4 errors on the last page?
I remember 2....like bubbles escape in the testube in water one and water contains bubbles in the fill with water one....

Im an idiot I wrote balancing would be a problem like getting the rule to be 100% horizontal would be a problem as we would think it is but it isnt coz when u look at it it seems fine.....so it can lead to inaccurate readings....I hope the ms is generous and allows that answer

I wrote to take care while taking reading from rule, think its correct? :/

 

[EpicLol]

I wrote to take care while taking reading from rule, think its correct? :/

Yea I think that would be accepted
But getting it to balance exactly is prbly the main problem...

 

[abdul aziz123]

sorry guys i wrote another ruler wuld need to be placed above the cylinder which would lead to inaccurate reading
this is 100% correct i am sure

 

[EpicLol]

I have a question....
After the IGCSE exams have been marked, do we get the question paper back with the certificate? my teacher says we wont but then how will we know what we got wrong?

 

[EpicLol]

sorry guys i wrote another ruler wuld need to be placed above the cylinder which would lead to inaccurate reading
this is 100% correct i am sure

I dont get it what do u mean by antoher one ontop of the cylinder?

 

[ThatReallyReallyWeirdDude]

I have a question....
After the IGCSE exams have been marked, do we get the question paper back with the certificate? my teacher says we wont but then how will we know what we got wrong?

You won't get the question papers back but you cna pay an extra fee to see a subjects examinations marked

 

[somaya]

I wrote 50g...lol I should have written 100g....but I think 50 would be accepted...

wt abt 5 g

 

[abdul aziz123]

I dont get it what do u mean by antoher one ontop of the cylinder?

i mean like place another rule horizontally above the cyinder as the cylinder was covering the rule so another rule was needed ! which we place vertically above ! from 0 mark till the 90 (i guess in the question)
i made this myself hope it is correct
what do u think?

 

[EpicLol]

wt abt 5 g

Umm a little off I think?

i mean like place another rule horizontally above the cyinder as the cylinder was covering the rule so another rule was needed ! which we place vertically above ! from 0 mark till the 90 (i guess in the question)
i made this myself hope it is correct
what do u think?

Hmm...I put place a mark on the side of the rule, then mark the center of the cylinder and then put the center over the mark....I think this would be accepted

 

[Z.A.M]

I wrote the ruler might seem horizontal but quite often its not 100% horizontal....do U think I will get a mark?
Thx

I wrote that too

 

[svenas]

I wrote that too

sure this is correct..I wrote hard to take readings from rule..wat u thnk??

 

[ThatReallyReallyWeirdDude]

I wrote measure the diameter of the cylinder, divide by two to find radius 'r' then place the cylinder such that the opposite edges are on 90+r and 90-r respectively.
e.g. if cylinder has diameter 4cm, radius = 2cm and edges are on 92 and 88 so center is on 90

 

[Z.A.M]

What were reasons for the last question I wrote that the thrust of water will be acting on the test tube as one of my reasons is that rite????? I don't think it is..........

 

[Z.A.M]

I wrote measure the diameter of the cylinder, divide by two to find radius 'r' then place the cylinder such that the opposite edges are on 90+r and 90-r respectively.
e.g. if cylinder has diameter 4cm, radius = 2cm and edges are on 92 and 88 so center is on 90

That's wat iwrrote it was repeated question from my June 2008

 

[Z.A.M]

What were reasons for the last question I wrote that the thrust of water will be acting on the test tube as one of my reasons is that rite????? I don't think it is..........

My question guysssss.........?????????

 

[Z.A.M]

Answer my question.....

 

[Omar Hosny]

I NEED HELP URGENTLY....FOR THE GRAPH I WROTE V/V Y-AXIS I/A X AXIS BUT I PUT THE SCALE OF THE DISTANCE INSTEAD OF VOLTAGE AND SO THE PLOTTING AND LINE DRAWN WERE WRONG AND I GOT A NEGATIVE GRADIENT !! HOW MANY MARKS WILL I LOSE ?

 

[aneeqa]

dude for the resistance Q, below the graph, what no. of significant fiqures did we have to round it off? :S

2 significant figures. answer was 1.5 ohms