tips for cramming hsc physics (1 Viewer)

[neuvie]

oh god im so done for

does anybody have study tips to quickly get good at phys? i really need to at least get a decent knowledge of the theory (ie, knowing the laws, experiments and important scientists) as well as being somewhat comfortable with calculations of different sorts (ie, those with different scientific equipment or different setups that may appear in the exam).

 

[liamkk112]

oh god im so done for

does anybody have study tips to quickly get good at phys? i really need to at least get a decent knowledge of the theory (ie, knowing the laws, experiments and important scientists) as well as being somewhat comfortable with calculations of different sorts (ie, those with different scientific equipment or different setups that may appear in the exam).

it’s gonna be difficult to get good quickly but

- know the basic laws and everything will follow; if you know newtons laws, conservation of energy, conservation of charge, conservation of momentum really well you pretty much can know the rest of the content in hsc physics since most of it is just applications or consequences of this eg mod 5 is pretty much all newtons laws and conservation of energy, electromagnetic induction is a result of conservation of energy, list goes on. so just try to have a really good idea of what those super basic laws are, and that will help a lot in understanding the higher order concepts

- for experiments try to understand the reasoning behind the experimental setup; eg for millikan, why were the drops placed into oil instead of something else? why use an atomizer? why do you have to use an x ray on the oil drops to give them charge? etc. see what you can remove from the setup, what will change? will the experiment still work? once you sufficiently question the experiment it will be much easier to remember the setup, because if something is missing you will notice a flaw in the experiment (even 1 year later nearly i still remember lol)

- for calculations just try to write down all the information in the question, usually that helps if you are struggling with figuring out which equations to use. ultimately you cannot prepare for every single situation and setup they may give you in the exam, jsut try your best to expose yourself to every single question you can to improve your chances of knowing how to solve the question in at least a few minutes or at the very least being able to slowly figure out a decent methodology to get a solution.

overall just try to understand things at a basic level and break everything down to its simplest form, don’t overcomplicate things and the moment things get complicated, that’s when you should take a step back and break things down further for yourself. besides that your best chances are to do as many past papers as you can, feel free to go back to some old syllabus papers too but you might have to be more selective in what questions are relevant

 

[neuvie]

it’s gonna be difficult to get good quickly but

- know the basic laws and everything will follow; if you know newtons laws, conservation of energy, conservation of charge, conservation of momentum really well you pretty much can know the rest of the content in hsc physics since most of it is just applications or consequences of this eg mod 5 is pretty much all newtons laws and conservation of energy, electromagnetic induction is a result of conservation of energy, list goes on. so just try to have a really good idea of what those super basic laws are, and that will help a lot in understanding the higher order concepts

- for experiments try to understand the reasoning behind the experimental setup; eg for millikan, why were the drops placed into oil instead of something else? why use an atomizer? why do you have to use an x ray on the oil drops to give them charge? etc. see what you can remove from the setup, what will change? will the experiment still work? once you sufficiently question the experiment it will be much easier to remember the setup, because if something is missing you will notice a flaw in the experiment (even 1 year later nearly i still remember lol)

- for calculations just try to write down all the information in the question, usually that helps if you are struggling with figuring out which equations to use. ultimately you cannot prepare for every single situation and setup they may give you in the exam, jsut try your best to expose yourself to every single question you can to improve your chances of knowing how to solve the question in at least a few minutes or at the very least being able to slowly figure out a decent methodology to get a solution.

overall just try to understand things at a basic level and break everything down to its simplest form, don’t overcomplicate things and the moment things get complicated, that’s when you should take a step back and break things down further for yourself. besides that your best chances are to do as many past papers as you can, feel free to go back to some old syllabus papers too but you might have to be more selective in what questions are relevant

thank you so much for your reply and advice. im currently just so stuck between doing either theory first then calculation, calculation and then theory or doing both at the same time, which should be the most effective way to learn it but i feel that going through online notes doesnt give much theory info (just some dot points) and watching videos will be very time consuming as i am struggling with all my other subjects but i struggle the most with physics for this reason.
in the exam, sometimes the formula sheet doesnt provide derived equations or i just cant wrap my head around how to change it up. and for theory questions im just stumped (me in trial) whether its short or long response because i really dont know much theory at all.

so far ive yet to explore keplers laws, faradays law, lenz law, wiens law, oil drop exp, hafele keating exp, einsteins special relativity, atomic clock exp, amperes law, ohms law, im effectively a monkey when it comes to phys.

 

[wollongong warrior]

Just some pointers on what you've listed,
Kepler's law can be derived from equating uniform circular motion and universal gravitation and moving all the variables to one side and the constants to the other side
Reason: when something orbits something else, we assume uniform circular orbit and what does that result in? F_gravity = F_(circular motion)
Faraday lenz's law is a consequence of newtons 3rd law: changing B field -> emf is generated-> emf flows clockwise or anticlockwise to generate its own B field to oppose the external B field