Anyone got q21? The height of the wall? I found grqdient of line and subbed into y = ut +1/2 a_y t^2 where u = 0 and t = gradient. Lol dunno if its correct
For Q13 (a) (iii)
Instead of using the previous parts (or using SHM properties), was it fine to just let v^2 = b(x-3)(x-7) (since they said it was a parabola)
Subbing (5,11)
giving b = -11/4 ==> v^2 = -11/4 (x-3)(x-7)
v^2 = 11/4 (4 - (x-5)^2) and equating?
Oh oops forgot lol. And the one in 3u this year was done by following a similar pattern from (i) and (ii) where you replace 7 games with n+k games and sum over all possible amount of games (where k = 1,2,...,k+1) as shown above by InteGrand.
I think it would. The horizontal axis is for the independent variable and the vertical axis is for the dependent variable. Iirc, the thing that we changed was the time so that would be on the horizontal.
For Space q50 why isn't it 0.99 x 3x10^8 x (half life of muon after time dilation) = 0.99x3x10^8 x (2.2)/(sqrt(1-0.99^2 ) ?
and why isn't it the same as q52
re: HSC Physics Marathon Archive
I just realised it. I thought the main thing was that in A the right wire went under the left one twice and for C it did it twice.. didn't see that one went under and the other was over
re: HSC Physics Marathon Archive
If i used right hand grip rule for A wouldn't it mean the magnetic field goes from left to right? Allowing it to rotate clockwise too