Physics: Post your doubts here!

[smzimran]

another question when we make a solution of two miscible liquids the boling point of the solution is effected...now ignore that whether it increases or decreases but the whole sol. has a uniform boiling point...if it is so then how we will perform the process of fractional distillation????

the whole solution cannot not have uniform boiling point. It is the property of the pure substance...​

 

[Duanoor]

What is E?

modulus of velocity

 

[Duanoor]

modulus of velocity

forget about it!its a property of matter...density ko dekho!!!!!

 

[smzimran]

modulus of velocity

Is this specific accoustic impedance?

 

[farhan143]

Can u explain me what is meant by a (vector component ) and ( horizontal component ) ? And how to find it for different conditions??

 

[smzimran]

Can u explain me what is meant by a (vector component ) and ( horizontal component ) ? And how to find it for different conditions??

http://www.s-cool.co.uk/a-level/phy...n/revise-it/resolving-vectors-into-components
Check this out

 

[farhan143]

i'm so sorry i meant to say (vertical component ) instead i said vector how foolish of me.........................either way thnks 4 the link

 

[farhan143]

Are the revision notes provided my xtremepapers for AS only or is it for A2 as well?
and are they a good source to study from??
cuz i printed it and i wnted to knw whether it is a good source or not

 

[smzimran]

Are the revision notes provided my xtremepapers for AS only or is it for A2 as well?
and are they a good source to study from??
cuz i printed it and i wnted to knw whether it is a good source or not

I think they are 4 A2 as well.

 

[farhan143]

How do you calculate the braking force
for example if a motorist is travelling at 10ms^-1 bringing his car to rest in a distance of 10m ....

how to you find the braking force for this???

 

[smzimran]

How do you calculate the braking force
for example if a motorist is travelling at 10ms^-1 bringing his car to rest in a distance of 10m ....

how to you find the braking force for this???

Find the deceleration, a
Braking force = ma + driving force

 

[farhan143]

do you know a link for a list of all the formulas for physics as contents??

 

[farhan143]

coud you just solve that question for me......
i get the formula but i cnt solve it!

 

[smzimran]

coud you just solve that question for me......
i get the formula but i cnt solve it!

What is the driving forceand the mass of the vehicle? post the complete question

 

[farhan143]

nothing is given

it is :
a motorist travelling at 10ms^-1 can bring his car ot rest in a distance of 10m
if he had been travelling at 30ms^-1, in what distance could he bring the car to rest using the same braking force ?

A) 17M
B) 30M
C) 52M
D) 90M

 

[smzimran]

nothing is given

it is :
a motorist travelling at 10ms^-1 can bring his car ot rest in a distance of 10m
if he had been travelling at 30ms^-1, in what distance could he bring the car to rest using the same braking force ?

A) 17M
B) 30M
C) 52M
D) 90M

answer is D) 90m
U dont need the braking force in this question.
Just find out the accceleration by using
2as = v^2 - u^2
where s=10, v=0, u=10
You will get a =5
Now substitute a = 5 in the same equation this time with u = 30, v=0
find out s = 90.

 

[farhan143]

THNKS

 

[smzimran]

THNKS

Ur welcome bro

 

[farhan143]

COULD U HLP ME OUT WIT SME PAST PAPERS ...
i need hlp in p1 and p2 cuz today i tuchd it!
hehehe

 

[smzimran]

COULD U HLP ME OUT WIT SME PAST PAPERS ...
i need hlp in p1 and p2 cuz today i tuchd it!
hehehe

Sure, just post ur questions.
U r in AS, right?