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# AQA Physics Unit 1 - Unofficial Mark scheme

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1. (Original post by lunaticash19995)
this was about useful energy out not efficiency
Oh yeah true I forgot, at least I didn't multiply by 100 lol
2. High grade boundaries i think
3. I wrote vibrations for question 2
4. (Original post by charliej2802)
Did anyone else put 22 degrees, think i messed it up
same!! i think you had to minus it from 100
5. anyone do foundation ?
6. (Original post by Snoozinghamster)
Anyone remember what the question was for the one after the 78 degrees one. It was something to do with power output. My friends said something about multiplying by 60. And I didn't do that!!!

The answer was something to do with watts if that helps!
I think it was average P = E/t = 46,200kWh/2h = 23,100W
7. (Original post by milolj)
What did people put for the similarities between infrared and micro waves?
I put they can travel in a vacuum and they transfer energy - don't know if I'm right though
8. (Original post by Snoozinghamster)
Anyone remember what the question was for the one after the 78 degrees one. It was something to do with power output. My friends said something about multiplying by 60. And I didn't do that!!!

The answer was something to do with watts if that helps!
Yh you had to multiply the 2 hrs by 3600 and get the time in seconds and the final answer would be in watts. I got 6.42 watts
9. (Original post by trishka)
I added it to the 100 to get 122
I think you had to subtract it as it was a temp decrease to get 78
10. (Original post by tahsin360)
Yh you had to multiply the 2 hrs by 3600 and get the time in seconds and the final answer would be in watts. I got 6.42 watts
I got that too
11. (Original post by tahsin360)
Yh you had to multiply the 2 hrs by 3600 and get the time in seconds and the final answer would be in watts. I got 6.42 watts
Yeah i got that. Did u get 78 degrees
12. (Original post by tahsin360)
Yh you had to multiply the 2 hrs by 3600 and get the time in seconds and the final answer would be in watts. I got 6.42 watts
Noooooo 7200 seconds for 2 hours
13. (Original post by tahsin360)
Yh you had to multiply the 2 hrs by 3600 and get the time in seconds and the final answer would be in watts. I got 6.42 watts
that's what I did
14. Will i get the mark for one of the first if i put the wavelenght was similar to the insect rather than the same as?
15. I made he same mistake but think you can still get two marks for the working out of tempretre difference and applying the data in the specific heat capacity equation
16. (Original post by alidas147)
Will i get the mark for one of the first if i put the wavelenght was similar to the insect rather than the same as?
I don't think so because similar could suggest greater or larger, don't worry I said greater haha
17. (Original post by charliej2802)
Did anyone else put 22 degrees, think i messed it up
I got this too
18. for why france use nuclear could you say that it's cheaper and the others are unreliable, (that nuclear can be made whenever needed?)
19. (Original post by milolj)
What did people put for the similarities between infrared and micro waves?
They both travel at the speed of light
They both can travel through a vacuum
20. I put echo location for the echo question😭😭 do you think I'll get the mark?

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