Physics: Post your doubts here!

[A star]

me no physics

you are doing Bsc in maths

 

[Thought blocker]

you are doing Bsc in maths

Bsc and in math, how ?

 

[Sam Ivashkov]

How do we improve parallax errors using set squares? In this marking scheme, http://papers.xtremepapers.com/CIE/...nd AS Level/Physics (9702)/9702_s11_ms_33.pdf, on the very last page, one of the limitations are listed as parallax error and its improvement as "Detailed use of set square or pointer to improve parallax"
Can anyone elaborate on this and explain how to use set squares to improve parallax errors (preferably with a picture?)
Keeping the ruler vertical using set squares is NOT the answer since that is a separate point in the marking scheme (the 4th one)

 

[saadgujjar]

http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_s06_qp_4.pdf
q4a and c plz

 

[Mohammed salik]

A parallel beam of light of wavelength 450 nm falls normally on a diffraction grating which has
300 lines / mm.
What is the total number of transmitted maxima?

Mohammed salik
Thought blocker
Suchal Riaz

the ans is 15

Ahh I m sorry Couldn't Reply :/!

 

[daredevil]

If separation between two molecules decreases, their Ep increases??

 

[sma786]

GMm/r^2 = mv^2/r

GM/r = v^2

Now k.e= 1/2 mv^2 = 1/2 m GM/r = GMm/2r .

Got it! Thanks

 

[sma786]

Centripetal force =mv*2/r

Gravitational force=GMm/R*2
Gracitational force provides centripetal force.
Put forces equal.find Velocitput velocity in Kinetic energy formula!

Oki thanks

 

[Rutzaba]

you are doing Bsc in maths

bs

 

[Rutzaba]

you are doing Bsc in maths

maths is considered a science subject
minors stats n phy... but im not gud enuff to help

 

[itallion stallion]

Oki thanks

N.p

 

[mehria]

Ahh I m sorry Couldn't Reply :/!

its ok

 

[A star]

maths is considered a science subject
minors stats n phy... but im not gud enuff to help

which university offers minors in Pakistan. i also wanted to do a minor :/
naa its a good choice not saying its a bad one just asking .
p.s minor in STATS . i hate it for some damn reason make stupid errors :/

 

[sitooon]

which university offers minors in Pakistan. i also wanted to do a minor :/
naa its a good choice not saying its a bad one just asking .
p.s minor in STATS . i hate it for some damn reason make stupid errors :/

Can you plz help me with q 2b(ii) & 3(b)
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s06_qp_4.pdf
Exam is tomorrow

 

[A star]

Can you plz help me with q 2b(ii) & 3(b)
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Physics (9702)/9702_s06_qp_4.pdf
Exam is tomorrow

so is mine
w8

 

[A star]

3b just read of the graph given above

 

[Thought blocker]

https://www.xtremepapers.com/commun...sion-for-physics-and-chemistry-paper-1.33891/
PAPER 1 PREPARING THINGS

 

[asenfire]

can anyone help me in bi)

 

[gary221]

View attachment 43076 can anyone help me in bi)

Link please?

 

[Muhammad Asadullah]

Guys, do we have to give our calculations correct to 2 significant figures or 3?