Physics Predictions/Thoughts (4 Viewers)

[Rattlehead15]

can some explain 16, and isn't 10 B because field is parallel

For 10 its D because the force on XY is the same all the way round because its a 2D side always perpendicular to the field. Q16 I guessed D and got it right

 

[abelsj01]

But for ii , it asked for the max emf in the ring with the incomplete flux linkage , so wouldn’t it just be 0???

i was banking on them not asking a trick question so i didnt put zero but flux is independent of current anyways so there would be an emf induced

 

[Alamjot]

What would a 70 raw be?

it will be similar to last years

 

[Cathode_RT]

it will be similar to last years

doubt it, definetily harder that last year, so scaling will be decent

 

[ExtremelyBoredUser]

How did everyone go?

 

[matiaschong123]

i was banking on them not asking a trick question so i didnt put zero but flux is independent of current anyways so there would be an emf induced

i won’t lie i’m not 100% sure but ig we will find out , i thought it was just a trick question ngl

 

[Alamjot]

For 10 its D because the force on XY is the same all the way round because its a 2D side always perpendicular to the field. Q16 I guessed D and got it right

fml

 

[Jamesssss10]

What was 23 b, did you just do E=hc/lambda and minus the wavelengths on the denominator?

 

[Rattlehead15]

What was 23 b, did you just do E=hc/lambda and minus the wavelengths on the denominator?

I just put in whatever the lower of the two given wavelengths was, I dont remember the question so I may have done it wrong but thats what I remember doing

 

[Jamesssss10]

My answer was a wavelength

I just put in whatever the lower of the two given wavelengths was, I dont remember the question so I may have done it wrong but thats what I remember doing

yh I didn’t like that q

 

[jackarana]

I just put in whatever the lower of the two given wavelengths was, I dont remember the question so I may have done it wrong but thats what I remember doing

don't you just convert max wavelength to frequency and then convert to energy

 

[Rattlehead15]

don't you just convert max wavelength to frequency and then convert to energy

Yes but I did E = hc/lambda instead of converting to freq

 

[jackarana]

Yes but I did E = hc/lambda instead of converting to freq

are both correct?

 

[carrotsss]

Bruh is our universe constantly expanding rn? For q20 because I picked A because hubbles law

The question wasn’t asking that though

 

[Rattlehead15]

are both correct?

Yeah because its the same thing just two different ways

 

[carrotsss]

How did everyone go?

pretty decent, hopefully got 20/20 m/c and then other than that I’m happy with most answers other than the projectile motion one where I forgot the horizontal motion

 

[esybeast]

The question wasn’t asking that though

Thought q20 is A cos the universe expansion was accelerating because as the distance increases the velocity increases proportional, so it’s accelerating.

 

[mmmmmmmmaaaaaaa]

just saw the exam, looks like a good one

 

[notme123]

Thought q20 is A cos the universe expansion was accelerating because as the distance increases the velocity increases proportional, so it’s accelerating.

apparantly the rate of expansion is accelerating. literally third derivative type of thing

 

[Hudz777]

For the spinning ball one did anyone get 44.21 metres East 0.16deg West?

close, i just got 95.something true bearing