As Physics Unit3 Discussion

[Shoggaine]

cravesends apparatus :O i dont think we need to know that

Do u know da experiment to investigate the equilibrium of three vertical forces??? Its dat.

 

[shoaeb]

Do u know da experiment to investigate the equilibrium of three vertical forces??? Its dat.

yeaaah the one with the weights hanging vertically right?

 

[Shoggaine]

yeaaah the one with the weights hanging vertically right?

Yes dat 1.

 

[Shoggaine]

18) Determine the wavelength of Na+ Light using grating

wat is this ?!

Dis is not der for us.

 

[U stalking ME]

I have read all da experiments and now i am solving da papers :/

well good luck

 

[étudiante]

Does anyone have the syllabus for the physics practicals? like the separate one for chemistry?

 

[Shoggaine]

Does anyone have the syllabus for the physics practicals? like the separate one for chemistry?

No irum. Its not evn given in da site.

 

[U stalking ME]

Here are some notes to be noted and can be used while answering questions:

during an experiment there can be three kind of errors:
1. personal ----> may be due to carelessness
2. Systematic ----> may be due to fault in apparatus
3. Random ---> maybe due to invisible unseen causes

to minimize error ----> 1. repeat it again 2. take average

what is uncertainty?
fault in the apparatus due to limitation of apparatus

limitation of apparatus = least count/ precision

reliable ---> less error
Precise ---> small value

less reliable ---> more precise >>> reason: because its difficult to take small measurement!

absolute uncertainty = least count = maximum value of uncertainty

greater than least count ---> personal error

1) Find mean, eliminate anomalie
2) uncertanity= (largest - smallest)/2
3) percentage uncertainty = uncertanity/measurement x100

 

[étudiante]

No irum. Its not evn given in da site.

even the chemistry one is not on the site

 

[candy123]

hey has anyone here solved physics unit 3 2009 paper may?

 

[shoaeb]

..

hey has anyone here solved physics unit 3 2009 paper may?

yeah except for the graph part?

 

[candy123]

yeah i have doubt it the graph part . and the last quesiton

 

[candy123]

for some abnormal reaosn i cant seem to get the right answer for frequency and my line doens tpass throught the origin

 

[shoaeb]

for some abnormal reaosn i cant seem to get the right answer for frequency and my line doens tpass throught the origin

havent solved it

 

[U stalking ME]

for some abnormal reaosn i cant seem to get the right answer for frequency and my line doens tpass throught the origin

no i am getting the rite answer, check ur readings

 

[candy123]

no i am getting the rite answer, check ur readings

is your line passing through the origin

 

[U stalking ME]

is your line passing through the origin

yes

 

[candy123]

yes

mine didnt

 

[U stalking ME]

mine didnt

maybe there is some plotting error

 

[candy123]

maybe there is some plotting error

may be thx
even int he mcq's for question 4 why is the answer D