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

Scroll to see replies

Oh I see. What option is it? (Not Astro I'm assuming given the mention of Einstein).

No worries!

Have you done many past papers?

Posted from TSR Mobile

Nope, that was my first one actually, and I'm doing Turning points #e=mc^2

Reply 741

Lau14

Original post by CD223

Seems harsh for FP1 and C3 to be on the same day...

Posted from TSR Mobile

Yeah exam boards don't worry about overlap! And loads of people in our college have that clash because it's anyone taking further maths and resitting core 3 and everyone who takes AS further maths because that is done alongside A2 maths. It's not so bad though, they're two of my easiest exams.

Reply 742

CD223

Original post by Cosmocos

Nope, that was my first one actually, and I'm doing Turning points #e=mc^2

First for PHYA5 or both units?

Sounds an interesting chapter. I felt we were cheated a bit learning the

E=mc^2

equation in the binding energy topic but not delving into its implications enough.

Posted from TSR Mobile

Reply 743

CD223

Original post by Lau14

Aha, I really should have done AS or A2 Further Maths. If I was to look at some topics over summer to help prepare me for uni, what resources would you recommend?

Posted from TSR Mobile

Reply 744

Hexaneandheels

Hello! For the medical physics paper, which one should I use in exam, heart nerve goes from -80mV to +40mV or -70mV to + 30mV? It states both in CGP book!

Reply 745

CD223

Original post by Hexaneandheels

Hello! For the medical physics paper, which one should I use in exam, heart nerve goes from -80mV to +40mV or -70mV to + 30mV? It states both in CGP book!

Hello there! You're the first person I've seen doing Medical Physics on the thread as far as I know - hopefully someone can pick you up on that! What does the AQA course notes say? I'd trust them more.

Posted from TSR Mobile

Reply 746

Mai.H

Original post by Hexaneandheels

Hello! For the medical physics paper, which one should I use in exam, heart nerve goes from -80mV to +40mV or -70mV to + 30mV? It states both in CGP book!

I usually use the 70mv/30mv ive only cone across one question using the 80mV/40mV one

Posted from TSR Mobile

Reply 747

CD223

I've got the PHYA5 June 2014 paper tomorrow. Anyone had this as their mock yet? Wondered the relative difficulty to previous years.

Posted from TSR Mobile

Reply 748

Hexaneandheels

Thank you do you have any idea what the difference is and why they have included two sets of values?

Original post by Mai.H

I usually use the 70mv/30mv ive only cone across one question using the 80mV/40mV one

Posted from TSR Mobile

Reply 749

Amanzz

Turning points question. We have finally started it (and plugged through cathode rays, Millikan's oil drop and the alternative method for the charge on an electron, just on through to light and waves).
I'm curious as to what this means on the teacher's notes for it...
"why the detector signal changes in strength whenthe detector is rotated about the line between the transmitter and the detector in a plane perpendicular to this line." in relation to Hertz and radio waves

Cheers

Reply 750

Mai.H

Original post by Hexaneandheels

Thank you do you have any idea what the difference is and why they have included two sets of values?

The 80 one is the action potential of the heart and the 70 one is the action potential of a neuron. The spec requires you to know in depth about the action potential of a neuron. I think they include the heart one so you know whats happening with ecgs and things?

Posted from TSR Mobile

Reply 751

Lau14

Original post by CD223

Aha, I really should have done AS or A2 Further Maths. If I was to look at some topics over summer to help prepare me for uni, what resources would you recommend?

Posted from TSR Mobile

For FP2-4, google it (eg aqa fp3) and the official AQA textbook for that unit will come up as a free pdf. I don't think you need any knowledge from other further units to do them (eg you can do FP3 without FP1 or 2), but they assume knowledge of all core A level maths (except for FP1). FP3 in particular can involve lots of different integration and differentiation techniques!
I guess you can look at what's relevant to you for which topics you study as you aren't sitting any exams.

Reply 752

CD223

Original post by Lau14

Thank you! I will do that over summer at some point, but I won;t get too stressed over it as I wanna relax and will be taught from scratch in September anyway :smile:

Reply 753

Lau14

Original post by CD223

Thank you! I will do that over summer at some point, but I won;t get too stressed over it as I wanna relax and will be taught from scratch in September anyway :smile:

Yeah, worth doing some reading maybe but definitely not worth getting worked up about! We've done all that for A levels so we'll have earnt a few months of mostly relaxing :smile:

Reply 754

CD223

Original post by Lau14

Yeah, worth doing some reading maybe but definitely not worth getting worked up about! We've done all that for A levels so we'll have earnt a few months of mostly relaxing :smile:

True!

Do you know why they call the "maximum" resolving power the smallest value of

\theta

? It's so illogical, I'm always tricked into using the larger value of

\lambda

haha

Reply 755

Lau14

Original post by CD223

True!

Do you know why they call the "maximum" resolving power the smallest value of

\theta

? It's so illogical, I'm always tricked into using the larger value of

\lambda

haha

The maximum resolving power is when

\theta

is smaller because that shows the smallest angle of separation that can be resolved - if the angle is smaller, you can see things that are closer together, so you can resolve more things, therefore maximum! It is a little confusing, similar to how the best time in a race is the smallest one.

Reply 756

Cosmocos

Original post by CD223

First for PHYA5 or both units?

Sounds an interesting chapter. I felt we were cheated a bit learning the

E=mc^2

equation in the binding energy topic but not delving into its implications enough.

Posted from TSR Mobile

Yeah Totally! I changed from medical physics after realising that there's less to absorb with turning points. And I was talking about the section B of PHYA5

Reply 757

CD223

Original post by Lau14

The maximum resolving power is when

\theta

Yeah, I see that. It's just the language. You wouldn't describe the maximum time in a race to be the smallest time would you :wink:

So counter-intuitive in this option I swear. Magnitudes of luminosity are just as silly.

Posted from TSR Mobile

Reply 758

CD223

Original post by Cosmocos

Yeah Totally! I changed from medical physics after realising that there's less to absorb with turning points. And I was talking about the section B of PHYA5

Never realised I could type like this