Physics: Post your doubts here!

[Zaki ali asghar]

i got the value of g around 3. something which is not accurate though.

 

[anastasia grey113]

i got the value of g around 3. something which is not accurate though.

guys calm down....there's only one mark for accuracy so chill
i got 10.9

 

[anastasia grey113]

Ya Allah I'm so stressed

Insha Allah you'll get an A* in A2 n an A in AS
talk to ur seniors...youll feel good hearing their stories
plus if u find the prac diffic it will lower the threshold
my teacher tells me diffic paper is a good thing so v should b happy
i screwed it too like the last part but m alright
Allah knows whats best for us so dw just pray

 

[sarmadimran]

guys calm down....there's only one mark for accuracy so chill
i got 10.9

My value of g was around 500 so it tells how inaccurate my readings were...so only one mark will be deducted? If not then how many do u think will be deducted?

 

[anastasia grey113]

My value of g was around 500 so it tells how inaccurate my readings were...so only one mark will be deducted? If not then how many do u think will be deducted?

yes 1 mark for each question
read the syllabus youll know

 

[anastasia grey113]

guys the main thing u should be worried abt are the errors n improvements ur tables n ur graphs since they alone make up a total of around 15 marks

 

[sarmadimran]

guys the main thing u should be worried abt are the errors n improvements ur tables n ur graphs since they alone make up a total of around 15 marks

I wrote in errors ...two reading insufficient...large uncertainty in y-x...difficult to balance rule because swings sideways....difficult to measure y because thread attached to metre rule hanging mass hanger slips....do u think these are correct?

 

[anastasia grey113]

I wrote in errors ...two reading insufficient...large uncertainty in y-x...difficult to balance rule because swings sideways....difficult to measure y because thread attached to metre rule hanging mass hanger slips....do u think these are correct?

yh all correct
ill be losing 5 marks from there i think :/

 

[sarmadimran]

yh all correct
ill be losing 5 marks from there i think :/

Improvements...take more readings plot graph...use larger masses so that uncertainty will be reduced...turn off fans...use glue to fix thread to rule...are they correct?

 

[Zaki ali asghar]

Two readings are not enough to draw a valid conclusion
The masses provided may not be of accurate values mentioned
The loop over the rod keeps sliding
The ruler balancing only for a short period of time so difficult to note x and y

are these correct?

 

[sarmadimran]

Two readings are not enough to draw a valid conclusion
The masses provided may not be of accurate values mentioned
The loop over the rod keeps sliding
The ruler balancing only for a short period of time so difficult to note x and y

are these correct?

Loop over the rod sliding I don't think so that was not in my case the loop attached to metre rule and hanging the mass hanger was slipping...and masses r not accurate that will not be acceptable I think...

 

[Zaki ali asghar]

actually the loop attached to metre rule had to be sliding to find the balance point but due to sliding over rod the balance length was difficult to find

 

[sarmadimran]

actually the loop attached to metre rule had to be sliding to find the balance point but due to sliding over rod the balance length was difficult to find

Yes but mine was not sliding over the rod...

 

[anastasia grey113]

Improvements...take more readings plot graph...use larger masses so that uncertainty will be reduced...turn off fans...use glue to fix thread to rule...are they correct?

yes...doubt the fans one though since the weights were too heavy to be affected

 

[anastasia grey113]

Two readings are not enough to draw a valid conclusion
The masses provided may not be of accurate values mentioned
The loop over the rod keeps sliding
The ruler balancing only for a short period of time so difficult to note x and y

are these correct?

1st n 3rd seem to be correct..dont know abt 2nd n 4th since masses provided r always accurate as instructed in the confidential instructions
n abt 4th...well in my case it stayed on until i removed it myself...in my case even 3rd one wasn't happening but it was a kind of problem for my fellows so 3rd one seems logical

 

[Zaki ali asghar]

http://studyguide.pk/Past Papers/CIE/International A And AS Level/9702 - Physics/9702_w10_ms_35.pdf
Check ms of 2nd Q the experiment was quite similar to the one we had in the exam.

 

[anastasia grey113]

http://studyguide.pk/Past Papers/CIE/International A And AS Level/9702 - Physics/9702_w10_ms_35.pdf
Check ms of 2nd Q the experiment was quite similar to the one we had in the exam.

then these may be correct

 

[anastasia grey113]

http://studyguide.pk/Past Papers/CIE/International A And AS Level/9702 - Physics/9702_w10_ms_35.pdf
Check ms of 2nd Q the experiment was quite similar to the one we had in the exam.

okay now m scared lol
i screwed up my practical
do u think its going to affect my grades?
ik the gt is going to shoot up this time n im going to lose ten marks at least in this practical
what was the ruler's mass btw?

 

[Zaki ali asghar]

I got it very less,wbu? I just hope i get at least 30+ somehow.How was ur paper2?

 

[anastasia grey113]

I got it very less,wbu? I just hope i get at least 30+ somehow.How was ur paper2?

lol paper 2 was ez af just one mark will be deducted tho :/
i got 137g...how much tho?