Physics HSC Predictions/Thoughts (1 Viewer)

[roryg03]

thoughts on the worst malus' law q we could get this year? hate that dot point and surely they couldn't pin a 4+ marker on us about it exclusively,, also anyone have the solutions to Normanhurst's trial for 2021. cheers

 

[notme123]

thoughts on the worst malus' law q we could get this year? hate that dot point and surely they couldn't pin a 4+ marker on us about it exclusively.

i dont think theres enough substance in that dotpoint but they could make us explain why the intensity is halved in the polariser and then has to obey malus law in the analyser

 

[luminol]

thoughts on the worst malus' law q we could get this year? hate that dot point and surely they couldn't pin a 4+ marker on us about it exclusively,, also anyone have the solutions to Normanhurst's trial for 2021. cheers

they could maybe make it a data-processing type of question where you could evaluate the method of a given experiment or why the results are the way they are, but other than that I don't think they can really ask a huge malus' law question; it's not exactly famous for its variation after all

 

[abstractaviator]

mate i'm sick and tired of doing exams or fkin studying
i want to fkin burn my uniform and books asap

facts dude, idgaf about the marks anymore, I just wanna stop thinking about physics

i’m so screwed

 

[izzyheslop]

pls are we allowed to bring things in the exam that aren't on the list of prohibited items but not on the allowed items list I wanna bring in a metal wire in the shape of a motor coil bc I suck at visualising shit

 

[Velocifire]

pls are we allowed to bring things in the exam that aren't on the list of prohibited items but not on the allowed items list I wanna bring in a metal wire in the shape of a motor coil bc I suck at visualising shit

yeah that's fine, bring in a gun too.

seems like that's not on the list either

 

[BlueGirl18]

Do you think it will be really hard? I'm really worried after the unexpected maths papers...I have studied really hard for physics and would hate for it to be another doozy of a test!!

 

[Jerryclover]

Do you think it will be really hard? I'm really worried after the unexpected maths papers...I have studied really hard for physics and would hate for it to be another doozy of a test!!

no one knows... But if it is, then it's hard for everyone and alignment will compensate

 

[Jimmy910]

someone do this question pls. I can't find the magnitude of the force.

 

[notme123]

someone do this question pls. I can't find the magnitude of the force.

since uy=0, at t=0.843, y = -1.35


so that means theres two forces with net force down.
(g is positive here since the negative is already taken care of)

up

basically theres an up force because of lenz law where the induced current of changing flux opposes the source of motion with a repellent mag field to draw kinetic energy and convert it into electrical and heat energy as a consequence of LCE.
a big caveat with this q is that the force upward is not constant, and is 0 mid way through as the flux through the tube is constant.

 

[Jimmy910]

since uy=0, at t=0.843, y = -1.35


so that means theres two forces with net force down.
(g is positive here since the negative is already taken care of)

up

basically theres an up force because of lenz law where the induced current of changing flux opposes the source of motion to draw kinetic energy and convert it into electrical and heat energy.
a big caveat with this q is that the force upward is not constant, and is 0 mid way through as the flux through the tube is constant.

I love you. I did smth similar but only counted F=ma as the upwards force with a = -3.8ms^-2

 

[notme123]

I love you. I did smth similar but only counted F=ma as the upwards force with a = -3.8ms^-2

f=ma only works as the sum of all forces i think.

 

[juju1234]

whos bringing in set squares (bc theyre on the list) and if so...why ?? struggling to see when I'd use them

 

[uniqueusername1]

I am so gone for EM. I don't understand AC induction motors.

induction motors aren't even that hard
just gotta understand lenz law

 

[uniqueusername1]

yeah that's fine, bring in a gun too.

seems like that's not on the list either

cool i'm bringing red bull

 

[izzyheslop]

yeah that's fine, bring in a gun too.

seems like that's not on the list either

good idea can use for projectile motion q

 

[notme123]

imagine nesa pulls a 180 and makes the entire exam maths questions with none based on history and experiments. i would kiss everyone in the room, including the supervisors.

sadly we dont live in an ideal world

 

[IDK and IDC]

imagine nesa pulls a 180 and makes the entire exam maths questions with none based on history and experiments. i would kiss everyone in the room, including the supervisors.

sadly we dont live in an ideal world

wdymmm, nah the opposite is wayyyyyy easier, sack the maths questions, just do experiments and theory.

 

[minijo]

imagine nesa pulls a 180 and makes the entire exam maths questions with none based on history and experiments. i would kiss everyone in the room, including the supervisors.

sadly we dont live in an ideal world

step 1: write just answers to 1 sig fig
step 2: do not elaborate further
step 3: profit

 

[IDK and IDC]

ok but i dont want to regurgitate information for why newton and huygens are nerds fighting over light or why rutherford left his model half assed for bohr to clean it up later

ur complaining about EASY marks