Physics: Post your doubts here!

[amina1300]

What was ur reading for the length of paper clip though? mine was 3.cm

 

[anastasia grey113]

What was ur reading for the length of paper clip though? mine was 3.cm

mine was 3.2

 

[amina1300]

searched it
its 0.5mm
but 1 is also written somewhere

The quoted uncertainty of a length measurement using a meter rule is therefore ±1 mm.
https://www.patana.ac.th/secondary/science/.../accuracy and precision.html
its 1mm .

 

[anastasia grey113]

how do u rate the paper?
was it easy or hard?

 

[amina1300]

mine was 3.2

3.1 cm.

 

[anastasia grey113]

The quoted uncertainty of a length measurement using a meter rule is therefore ±1 mm.
https://www.patana.ac.th/secondary/science/.../accuracy and precision.html
its 1mm .

The sensitivity of a meter rule is 1mm, the possible error being half the sensitivity is±0.5mm. Percentage uncertainty is equal to your (possible error/recorded measurement)x100, this varies depending on the magnitude of your measurement.
https://www.thestudentroom.co.uk/showthread.php?t=887931

 

[amina1300]

how do u rate the paper?
was it easy or hard?

I havent actually done alot of practicals but I guess it was easy for most people because they werent any electircity questions.

 

[anastasia grey113]

I havent actually done alot of practicals but I guess it was easy for most people because they werent any electircity questions.

lol i wouldve been happier if it had been electricity
what was ur acceleration btw?

 

[amina1300]

The sensitivity of a meter rule is 1mm, the possible error being half the sensitivity is±0.5mm. Percentage uncertainty is equal to your (possible error/recorded measurement)x100, this varies depending on the magnitude of your measurement.
https://www.thestudentroom.co.uk/showthread.php?t=887931

Confused.

 

[anastasia grey113]

Confused.

ikr its confusing
i also used to think it was 1mm until a friend said it was 0.5mm :/

 

[amina1300]

lol i wouldve been happier if it had been electricity
what was ur acceleration btw?

I got it in cm s-2 was it supposed to be in ms-2 I had no time so i used cm..?

 

[anastasia grey113]

I got it in cm s-2 was it supposed to be in ms-2 I had no time so i used cm..?

it depends
if u used 3.2cm than write cms-2
if u used 0.032m like i did write ms-2

 

[amina1300]

Did you have negative values thought out the exam-paper?

 

[anastasia grey113]

Did you have negative values thought out the exam-paper?

nope but my friend did
u?

 

[sarmadimran]

If we get incorrect readings in question1( mine all were in the range 1.2-1.24) then all the other parts of the question will be incorrect....so how many marks will be deducted?

 

[amina1300]

If we get incorrect readings in question1( mine all were in the range 1.2-1.24) then all the other parts of the question will be incorrect....so how many marks will be deducted?

The oscillations Question?

 

[sarmadimran]

The oscillations Question?

Yup

 

[sarmadimran]

What was 1.2 ? the clip reading?

Time period my all times were in the range 1.2-1.24 that were wrong so how many will be deducted?

 

[anastasia grey113]

If we get incorrect readings in question1( mine all were in the range 1.2-1.24) then all the other parts of the question will be incorrect....so how many marks will be deducted?

i think itll cost one mark only
you should review the syllabus for paper 3
theres only one mark for quality of collected data n accurate results

the rest by which i mean the graph intercepts gradients n all will be checked according to your readings only on your readings only

if you made a neatly ruled table with the correct headings n units n repeats n all n if your range was like 2,4,6,8,10,12 or 4,6,8,10,12,14 then u r good to go

 

[selrey]

If I get an A in p1 n p2, and a C in p3 in phy what will be my overall grade? Like ik p3 was quite easy. Like the exp were easy to perform but i did some silly mistakes like i didnt take the max range n i wrote the time n gradient to wrong sig fig n i did write the right units in gravity question n ofc i couldnt write the errors n imp n ughh much more