AQA Physics PHYA5 - Thursday 18th June 2015 [Exam Discussion Thread]

It's said moving so elastic collisions and random motion

Oh I can't remember exactly it was pretty small in comparison to the radius of the sun, that's all I remember


Posted from TSR Mobile

It's said moving so elastic collisions and random motion

is ' obeys newtonian mechanics ' an answer?

For the motion question I said

Molecules are moving randomly

Molecules are moving in all directions in the x y z planes


Posted from TSR Mobile

I meant for the radius of the star, what did everyone get?

surely thats the same thing worded differently

Yeah I put no interaction between the particles (which means the same as elastic collisions) and also Brownian motion

We can argue this all day haha but yeah I agree with your last paragraph. However electrostatic force is a type of electromagnetic force but all electromagnetic forces aren't electrostatic forces as it's not always a static field. Do u get what I'm trying to say now?

Something like 2 orders of magnitude less than the sun's radius. It wasn't exactly 2 orders less but I had it *10^6 rather than *10^8.

Brownian motion refers to a different phenomenon, I think.

No there is a subtle difference I believe haha


Posted from TSR Mobile

9.5*10 ^6 ring any bells?

Brownian motion refers to a different phenomenon, I think.

That's agreeing with me

I hope I didn't seem particularly angry or anything haha.

AQA may in fact not allow "electromagnetic" but that would be ****ing stupid

9.5*10 ^6 ring any bells?