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Just got my atar: 99.05. Please recommend some courses in UNSW or USYD that is around 98.5 - 99 range, I dont want my atar to go to waste lol. Honestly I have no idea what courses I want to do.

tried the emf formula several times but didnt get any of the answers, can someone pls give a step by step explanation of how to get the answer. thx

Please explain how to do this question

During a radioactive decay reaction, if the mass of the reactants is greater than mass of products, then mass is lost. I know that it is transformed into enery on the products side of the equation, but what exactly is that energy ? (is it potential energy, KE or radiation energy?)

i am a bit confused, how do I find the upper limit for this question ? i can only find the lower limit which is 50

can someone pls help with part b and c, I tried it a few times and kept getting the wrong answer

Can someone please provide working out and answers for these 2 questions, the answers that I got is totally different to that of the textbook and I dont really know what went wrong.

Please provide working out and explain how to do this question

Can someone please explain how DC motor and generators work under different physics principles ?

For the non equilibrium dot point of the syllabus, I am not sure how to explain why photosynthesis and combustion are non equilibrium systems. I do know that photosynthesis has a decrease in entropy and increase in enthalpy, and is therefore non-spontaneous (positive Gibbs free energy) but what...

Could someone please explain what are the function of the reference and the sample cells in the set up of infrared spectroscopy ? Thanks in advance

Using the diagram below, could anyone please explain why the current of the DC motor is very high and reaches its peak at the start ? Also, as it rotates faster, the back emf increases, so the net emf (voltage) decreases, but why the speed and the current of the motor eventually becomes steady...

Can someone please explain how AC induction motors work ? I get the part where they use rotating magnetic fields to induce a current in the conductor bars of the rotor. But I dont really understand how the 3 - phase induction works ( its graph and cycle). The textbook said that the 3 - phase...

I just went through the 2019 Hornsby Girls Trial paper 1, and saw that there were lots of long texts and found it extremely unrealistic to finish reading them in the 10mins reading time. I also had trouble selecting the most important parts of the texts, because I felt like I would compromise...

I'm kinda stuck for paper 1 section 1 so I was wondering what I could do to get the most out of the 20 marks. So lets say we have 55 minutes for section 1, and 10mins for reading. Should I start finding techiques and analysing the texts in the 10mins, or just try to understand the big idea of...

please explain how to calculate this, I got a wrong answer for some reason

For this question, could someone please explain how the frequency of the wave is related to the voltage. ( I thought that we normally graph frequency against KE), also pls explain how I could use the graph to find the Plank's constant, work function, threshold frequency and why it works like...

The textbook says that Newton's corpuscular model proposes that light's normal component of increases in a denser medium, and the tangential component remains same. But Im not sure what these two components are. Please point out.

What exactly is the function of the proles in 1984 ? How are they linked to human experience ?

please help with justifying which ones are acidic or neutral or basic, I have trouble figuring out how the equations for dissolution works.