National 5 Physics Unofficial Marking Scheme Watch

Strelzo
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Section 1

Unofficial marking scheme for Section 1 (Please correct me if your answers differ. Also, the images are not in order because they were uploaded randomly to my computer; I will edit this post in the future to tidy it up a bit):

1. A

2. B

3. E

4. C

5. C

6. B

7. C

8. C

9. D

10. E

11. A

12. D

13. B

14. B

15. E

16. D

17. B

18. C

19. D

20. A

21. B

22. A

23. E

24. D

25. B

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Last edited by Strelzo; 4 days ago
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Strelzo
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Alexanderpaynnne
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I got C for q4 as the ball is travelling at 8ms-1 so in 2s it would have travelled 16m. Which I think means that the distance is 16-3 = 13m
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Alexanderpaynnne
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Either that or it was something to do with horizontal and vertical velocities
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Strelzo
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(Original post by Alexanderpaynnne)
I got C for q4 as the ball is travelling at 8ms-1 so in 2s it would have travelled 16m. Which I think means that the distance is 16-3 = 13m
Alright, I'll update the post; that seems plausable to me, thanks for pointing that out.
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Alexanderpaynnne
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Not 100% certain tbh but it’s the only thing that jumped out at me. No problem.
(Original post by Strelzo)
Alright, I'll update the post; that seems plausable to me, thanks for pointing that out.
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Simondo123
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For 16 I got E, V1/T1 = V2/T2, I did 0.3/20 x 50 to get 0.75m^3. I might of done it wrong, how did you work out the answer to be 0.33m^3
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The_RobDob
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(Original post by Simondo123)
For 16 I got E, V1/T1 = V2/T2, I did 0.3/20 x 50 to get 0.75m^3. I might of done it wrong, how did you work out the answer to be 0.33m^3
You have to change the temp to kelvin
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Strelzo
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(Original post by Simondo123)
For 16 I got E, V1/T1 = V2/T2, I did 0.3/20 x 50 to get 0.75m^3. I might of done it wrong, how did you work out the answer to be 0.33m^3
Yeh, what The_RobDob said.
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Alexanderpaynnne
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Just wondering if q11 is A
You said B but If the lamp is off why would it turn on when the light level increases? You don’t want a lamp to turn on when it’s bright so I think it would be the decreases one- eg when it’s dark.
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Strelzo
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(Original post by Alexanderpaynnne)
Just wondering if q11 is A
You said B but If the lamp is off why would it turn on when the light level increases? You don’t want a lamp to turn on when it’s bright so I think it would be the decreases one- eg when it’s dark.
My thinking was:

"There is a variable resistor and a light dependant resistor. I noticed the transistor, so wouldn't increasing the light level increase the voltage; hence increasing the voltage to be greater than 0.7V, therefore switching on the transistor, which lights the lamp. I might be wrong, but that's what I think. I'd need to see someone's working for it xD."

RobDob also said A, so I will change it the now; as I'm positive you guys are right :P
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Alexanderpaynnne
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Fair enough. I guess we’ll have to wait and see in August :/
Seem to have about 18ish out of 25 so quite happy.
Can someone share their reasoning for q24? Thanks
(Original post by Strelzo)
My thinking was:

"There is a variable resistor and a light dependant resistor. I noticed the transistor, so wouldn't increasing the light level increase the voltage; hence increasing the voltage to be greater than 0.7V, therefore switching on the transistor, which lights the lamp. I might be wrong, but that's what I think. I'd need to see someone's working for it xD."

RobDob also said A, so I will change it the now; as I'm positive you guys are right :P
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Abbyallan27
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For question 11, I went with E, can someone explain the answer?
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rg2019
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12 is D
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Abbyallan27
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Ha nevermind get it now lol
(Original post by Abbyallan27)
For question 11, I went with E, can someone explain the answer?
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Alexanderpaynnne
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(Original post by Abbyallan27)
For question 11, I went with E, can someone explain the answer?
Well I recognised that the ldr was on the bottom so was the decider and ruled out anything not to do with light and then thought it was A from logic.
I’m not very good at explaining, so hope you understand. Thanks
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Alexanderpaynnne
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(Original post by rg2019)
12 is D
I got that too
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Strelzo
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Thanks for the follow Alexanderpaynnne. Followed you back :thumbsup:
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Strelzo
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(Original post by rg2019)
12 is D
How do you get D?
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Alexanderpaynnne
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Anytime man! Just sharing in the horror that was Nat 5 physics
(Original post by Strelzo)
Thanks for the follow Alexanderpaynnne. Followed you back :thumbsup:
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