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

Reply 2840

TheRAG

2

Original post by EconFan_73

For Astro, did people get the temp of the star to be 16000K or 5000K? If 5000K why?

16000 (although like an idiot I put 16100)

Reply 2841

GuyPerkins1996

1

Original post by k9000

What was the hard bit in TP? Only 3~4 marks were hard. The rest were straight forward questions imo. I think 5D will have 62 for an a* and 54 for an a. Last year was much harder

What do you think the 120 cap will be for 5D? 67ish ?

Reply 2842

DomRauba

2

was it a white dwarf guys and is the interaction electromagnetic?

Reply 2843

MangoFreak

17

The 6 marker on absolute zero was amazing, so good. The Turning Points 6 marker was similarly awesome.

Reply 2844

mrno1324

11

Original post by king cobra

No proton number is same

Posted from TSR Mobile

Yeah but neutron isn't, hence radius isn't constant hence gap width isn't constant.

Reply 2845

Puzzled_Logician

9

Has anyone else done Applied?

Reply 2846

k9000

2

Original post by GuyPerkins1996

What do you think the 120 cap will be for 5D? 67ish ?

Yeah, 67 ish but any higher i doubt.

Reply 2847

Emmanuel12344

2

The temperature of the star was around 16000k right

Reply 2848

Sbarron

3

I thought the angle was smaller than the minimum angle resolved by telescope grrr

Reply 2849

Faaiz Shah

2

Original post by palaseum9

The only tricky one was the one where you had to find the voltage applied to the electron, otherwise most of it was quite straight forward.

I agree it was easy . The calculations were straight forward. But in my school alot of people found it difficult and made tiny mistakes in large calculations..

Anyways did u get 4.12 to thE something for the 2nd last turning points one??

Reply 2850

RemainSilent

3

Original post by TheRAG

16000 (although like an idiot I put 16100)

i put 16111K as the grpah was somehting like rounded ?

Reply 2851

MangoFreak

17

Original post by GuyPerkins1996

What do you think the 120 cap will be for 5D? 67ish ?

What's the whole thing out of? 100?

Reply 2852

TheRAG

2

Did we all get 318/320K for the last (Part A) Q on temperature of a gas?

Reply 2853

DAVZ125

What was the radius of the star where the temperature was 16000K?

Reply 2854

Sbarron

3

Original post by chizz1889

No change as charge of gold nucleus unchanged, force was electrostatic repulsion

I put changed because different sized nuclei.... (Different number of neutrons)

Reply 2855

Puzzled_Logician

9

Original post by TheRAG

Did we all get 318/320K for the last (Part A) Q on temperature of a gas?

Something like that; I can't remember the exact figure

Reply 2856

Faaiz Shah

2

Original post by k9000

Wasn't the density 1.3 something x10^17?

Was the mass A times by atomic mass unit??

Reply 2857

k9000

2

Original post by MangoFreak

What's the whole thing out of? 100?

75

Reply 2858

TheRAG

2

Original post by RemainSilent

i put 16111K as the grpah was somehting like rounded ?

Yeah I calculated 16111.11 but rounded my answer

Reply 2859

MangoFreak

17

Original post by Faaiz Shah

I agree it was easy . The calculations were straight forward. But in my school alot of people found it difficult and made tiny mistakes in large calculations..

Anyways did u get 4.12 to thE something for the 2nd last turning points one??

Dunno where the 2 is coming from but I got 4.1*10^7

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

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