AQA 2019 Paper 3A - A-level Physics Past Paper

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00:00 Q1 - Radioactivity experiment
08:27 Q2 - Water flow rate experiment
16:27 Q3 - Stationary wave on rod experiment -
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[itz_harman]

Just wanted to say thank you so much man!, because of you i managed to get A in physics!!, keep up with these videos!

[divyanshjain]

Can you please also make video solutions for the AQA A level Papers 3B of all options A, B, C, D and E for June 2017, 2018 and 2019 exam series as I really find your video solutions useful?

[yashshah]

Thanks very much for the videos. At 14:09, I think the reason they want 3 s.f. is because in the "show that questions" where they say "show that x is about ___" they always want one more sig fig than given in the show that. So here, they say show it is about 4.5 so they want us to give it to 3 s.f. so they can check we didn't just copy the answer. That's just what I think, although may be wrong! many thanks once again.

[adamblake]

I dont understand how in 2.5 y decreases exponentially with t when the graph is a straight line

[geoffphillips]

Q 2.6 15.09 ...but where can you see this half life time on graph? I got 154 s too; but then thought I was wrong since I couldn't see where it would be on graph. Thnx ..really njoying your helpful vids

[zahin.]

For qs 1.6 you got “mm^2s^-1” at 7:11 . Which doesn’t make sense, because d is measured in mm not mm^2. And its root A so you’d have (s^-1)^1/2 which gives s^-1/2 . So the units overall gives mms^-1/2 right?

[Megan-lcrf]

in question 2.1, why can't use use a light gate?