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AQA Physics unit 2

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Original post by a_homida
Did anyone get 52 N for the boy doing pull-ups question?


I got 52 also
Reply 61
Avatar for Ollyxd
Ollyxd
9
Original post by Certified
Yes, I took away 840 from the bigger number because you needed the resultant force in the equation. Paper was fairly hard.

I did that too :biggrin:DDD
Reply 62
Avatar for Mayfate
Mayfate
4
Original post by Monsor
The one that compared the two graphs and said something about 40cm

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Wasnt that the ultra sound? where the distance was 40cm and you had to convert it to 0.04m?
Original post by Monsor
You're meant to plus the voltage in a series circuit so you were meant to tick the third box, 9+3= 12V

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I did this and hopefully it's correct
Can someone put the written answers in please :smile:
Reply 65
Avatar for Syyed_
Syyed_
3
Original post by a_homida
Did anyone get 52 N for the boy doing pull-ups question?


you mean 52 watts
Original post by Syyed_
you mean 52 watts


What was the oil error question?
Thank You
Its actually 12m/s^2 isn't it as it said it increased TO 1850N from the 840N that was already keeping him stationary?
I loved the 6 marker omfg
did anyone get earth wire for that cable thing
Any guesses for the grade boundaries??
Original post by Cookies15
1a) what was the main error with the oil experiment (1mark)


I put human error because the peraon may make a mistake reading the stopwatch or marks on the glass tube. Not sure how correct that is though.

Also for tge rest of it, i put the drag force is greater than because it needed to be greater as the speed was greater, so to reach terminal velocity and get to a resultant force of 0, thedrag force needed to be higher as the weight force was higher
Yes
Reply 73
Avatar for Monsor
Monsor
2
Original post by SmithAmelia
I did this and hopefully it's correct


It is right

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Original post by Ethanf8200
Any guesses for the grade boundaries??


should be something like 40 for an A* as it was 41 for A* in 2013 and it was easier imo
Original post by a_homida
Did anyone get 52 N for the boy doing pull-ups question?


Original post by a_homida
52 Newton. I'm deffo wrong thou :frown:


Yes!
Original post by Monsor


Yes!
Original post by user2k16
did anyone get earth wire for that cable thing


It was live
Original post by Kinnybin
Woah that paper was intense despite my thorough revision. The calculations were really weird! In the oil ball bearer question, was "less than" the right answer?

yah due to faster speed
Reply 79
Avatar for Syyed_
Syyed_
3
Original post by SmithAmelia
What was the oil error question?
Thank You


lmao i forgot most of the questions. What did u guys write for the scientist question? something about the universe blah blah.

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