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This is a lesson dont listen to the haters, i got 96.25 :cool:

the toughest questions in the paper tbh

the b fields went in different directions

It wasnt the same very similar, did you do 0 the whole way?

I did it your way 👍 and i got the same answer as someone who did trig

I dunno I cant disagree with math gpt but in my mind this is d. You are missing somthing, with a horizontal dilation is gotta be outside the brackets as its dilating the whole x component (ie ln1/3(x + pi)) which can be distributed through the function to give D

if you use right hand rule, fingers go left, thumb goes down, palm goes into page, meaning pos goes into page towards Q leaving P negative

It does actually, thank you

This is a hard question so dont worry to much, the amplitude is like that because the induced current is equal to the rate of change of flux, when it originally enters it induces a certain amount of current, when it is in the middle it has no effect because it cancels itself out. However while...

wtf is time difflacteration??? you got me worried

Exactly, so it must be the data logger that has some funny business that I dont understand Yeah its travelling faster so it has greater change in flux

Yeah I agree with the south pole at the top of the solenoid

Because usually with these sort of questions the magnet entering the solenoid has the north side at the front not the south side. At least thats what I see, but I got the question wrong

If the voltage is travelling from the + to the - would that not lead to a positive spike? Im fine with the second spike being bigger, it makes sense but this may be where my confusion lies

Why would this lead to an initial negative spike?

I dont know about this tbh, other magnets in coil questions always consider the side entering first (ie the south pole of the magnet) before considering the back of the magnet. I mean Im wrong and your right so ill take your word for it but it seems very odd

If the magnet was dropped North side in it makes sense, but its not, or am I being incredibly stupid? these induced emf questions are usually so easy

Why is it creating a north pole?

You dont even do physics? Im so confused rn

Why is the solenoid attracting the magnet? Doesnt the solendoids induced emf work to stop the force inducing it? Doesnt the solenoid want to repel the magnet?