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# AQA Physics PHYA1 - 24 May 2016 - RESIT [Exam Discussion Thread] Watch

1. (Original post by ahlam H)
I wrote particle X was a neutral meson with strangness k^0
I wrote pi^0 because strangeness doesnt balance with k^0....
2. (Original post by Einstein1997)
Pretty glad I revised diodes last night at 2am...

What did you guys say particle X was?
Pi 0
3. (Original post by Goldfly)
Why was it a dot on the oscilloscope rather than a line? I think I misread the question and put because the battery provides a d.c current
Time base turned off. It said horizontal line not vertical.
4. (Original post by Goldfly)
Why was it a dot on the oscilloscope rather than a line? I think I misread the question and put because the battery provides a d.c current
I don't think you misread it because that's what I put
5. (Original post by Einstein1997)
Time base turned off
That's what some people said. I don't remember the exact wording of the question because either could be right depending on if they meant vertical or horizontal line.
6. Anyone get neutral pion for X
7. (Original post by Einstein1997)
Time base turned off. It said horizontal line not vertical.
No, if time base is turned off then it'd produce a vertical line, not a dot
8. (Original post by CJWright97)
K^0 i said
That's what I put but it was worth three marks and I drew a little table, don't know if that counts as working. What are the other 2 marks for as I thought 3 marks for that question was a little excessive if they only want you to find the particle.
9. (Original post by Goldfly)
Why was it a dot on the oscilloscope rather than a line? I think I misread the question and put because the battery provides a d.c current
Its a dot because no current was flowing (the switches were open) therefore there would be no line
10. I think it said that k- decayed so the strangeness was not conserved so i put pi 0
11. (Original post by Shta15)
Anyone get neutral pion for X
yes
12. (Original post by CJWright97)
Its a dot because no current was flowing (the switches were open) therefore there would be no line
https://quizlet.com/140227597/phya1-flash-cards/
A little something I've been working on. Since most of the questions are often repeated, here's some of the questions and the mark scheme I've composed since 3 days ago. Hope you guys will find this useful
that was very useful, have you created one for unit 2 ?
14. (Original post by Goldfly)
If there was no current, wouldn't there be no dot at all? lol since no power is going through the oscilloscope
15. (Original post by CJWright97)
Its a dot because no current was flowing (the switches were open) therefore there would be no line
Thats what i put. If the switch was open then there couldnt have been a line
16. (Original post by kelvin1338)
No, if time base is turned off then it'd produce a vertical line, not a dot
No, because a battery is d.c.

Battery is dc which gives a horizontal line if the time base is on.
17. (Original post by Shta15)
Anyone get neutral pion for X
I did
18. (Original post by Einstein1997)
No, because a battery is d.c.
oh nevermind i realised my mistake aha
19. (Original post by Goldfly)
Why was it a dot on the oscilloscope rather than a line? I think I misread the question and put because the battery provides a d.c current
I just said the oscilliscope was not connected to the cirucit as both switches were open.
20. What were the two reasons to have a low resistance? I got that one was to provide a high enough current for the oven to function but I was unsure about the other one.

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