Physics HSC Predictions/Thoughts (1 Viewer)

roryg03

New Member
Joined
Aug 2, 2020
Messages
5
Gender
Male
HSC
2021
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

Well-Known Member
Joined
Apr 14, 2020
Messages
1,002
Gender
Male
HSC
2021
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

New Member
Joined
Oct 13, 2021
Messages
23
Location
somewhere in the cyberspace
Gender
Male
HSC
2021
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
 

BlueGirl18

New Member
Joined
Sep 4, 2019
Messages
11
Gender
Female
HSC
2021
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!!
 

Jimmy910

New Member
Joined
Nov 13, 2021
Messages
11
Gender
Male
HSC
2021


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

notme123

Well-Known Member
Joined
Apr 14, 2020
Messages
1,002
Gender
Male
HSC
2021


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.
 
Last edited:

Jimmy910

New Member
Joined
Nov 13, 2021
Messages
11
Gender
Male
HSC
2021

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
 

juju1234

New Member
Joined
Mar 30, 2020
Messages
6
Gender
Female
HSC
2021
whos bringing in set squares (bc theyre on the list) and if so...why ?? struggling to see when I'd use them
 

notme123

Well-Known Member
Joined
Apr 14, 2020
Messages
1,002
Gender
Male
HSC
2021
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

New Member
Joined
Nov 9, 2019
Messages
14
Gender
Male
HSC
2021
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

New Member
Joined
Feb 16, 2020
Messages
12
Gender
Male
HSC
2021
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

New Member
Joined
Nov 9, 2019
Messages
14
Gender
Male
HSC
2021
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
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top