ALL CIE PHYSICS DOUBTS HERE !!!

[astarmathsandphysics]

Then they are rounding up extremely.

[Most UniQue™]

Then they are rounding up extremely.

Yah Thats what I had been guessing...

[emzie]

Hello! Hope you all doing great 

I just have this doubt in equilibrium

Is the Kp value affect by change in pressure at constant temperature, if not then why?

Thank in advance!

[Most UniQue™]

Hello! Hope you all doing great 

I just have this doubt in equilibrium

Is the Kp value affect by change in pressure at constant temperature, if not then why?

Thank in advance!

Isnt this is related to chemistry cuz I have seen it there.

Post it here:

https://studentforums.biz/sciences-149/chemistry-doubts-10366/

[emzie]

Oooooops!! My bad 

I was going to post it there, dunno how i can here 

Anyway Thanks

[astarmathsandphysics]

I did that once - ended up in a place I shouldn't be.
When I realised my mistake, I told them, "I've had so much fun. If I ever end up in the wrong place again I will make sure it's this one".

[astarmathsandphysics]

A jeweler needs to electroplate gold (atomic mass 196.97 u) onto a bracelet. He knows that the charge carriers in the ionic solution are gold ions, and has calculated that he must deposit 0.20 g of gold to reach the necessary thickness. How much current does he need to plate the bracelet in 3.0 hours? (Avogadro's number is 6.02 × 1023.) ??

Mass of 1 mol of gold atoms=197.97*1.67*10^-27*6.02*10^23=198g
no gold atoms needed=0.2/198*6.02*10^23=6.08*10^20
Nogold atoms per sec =6.08*10^20/(3*3600)=5.63*10^16
so current=5.63*10^16*1.6*10^-19=9*10^-3A

[ashwinkandel]

I am confused with one question of simple harmonic motion.

[astarmathsandphysics]

force due to one spring is F_1 =kx and force due to other is F_2=-kx cos in opposite direction
net forec=F_1-F_2=2kx

[Most UniQue™]

force due to one spring is F_1 =kx and force due to other is F_2=-kx cos in opposite direction
net forec=F_1-F_2=2kx

Wow sir your really good in physics!

[astarmathsandphysics]

Request some videos

[ashwinkandel]

I would like to request Videos of Quantum Physics. I have attached the topics required for CIE below:

[astarmathsandphysics]

will start making some today

[ashwinkandel]

Questions from Nuclear Physics(A2 Part)
I have attached the questions

[astarmathsandphysics]

a)nuclear processes have a very high activeation energy becasue of the electric repulseion of the protons.
b)helium nuclei have twice the carge of protons so repel even more strongly, making the activation renergy higher
c)mass of reactants=3*4.001506=12.004518u
mass of product=12u
difference=0.004518u
mass=0.004518*1.57*10^-27kg
E=mc^2=0.004518*1.57*10^-27*(3*10^8)^2=6,79*10^-13J