Physics Misteaks that cost A Grades

[@zhelyo_physics]

To try everything Brilliant has to offer-free-for a full 30 days brilliant.org/Zphysics The first 200 of you will get 20% off Brilliant’s annual premium subscription. Try it out and then let me know how you find the courses!

[@nasirjoardar]

How to complete all theory for APHO?

[@zhelyo_physics]

I recommend going through every single point of the spec and solving many many problems on every single one! I have a video for detailed olympic advice here if it's useful: kzbin.info/www/bejne/oJrMaWp8Ypd9rrssi=aFAzHKnPDKHoLuXu

[@muzammilahmad6111]

2D Momentum is a concept which is used in Further Mechanics 1 so those who do Physics and FM (mech included) have an advantage in the first question

[@Credd1]

Chapter 5 elastic collisions in 2 dimensions 😃

[@zhelyo_physics]

Interesting point. Thanks for the comment!

[@pro0619]

HE HAS GOTTEN A SPONSOR

[@qarcin12]

Zphysics your are the GOAT keep making videos like this where you go through these harder questions please!!

[@zhelyo_physics]

thanks a lot!! Planning to do lots of these, stay tuned! : )

[@sentheaS]

For the diffraction one I instead rearranged dsinθ = nλ to give n = dsinθ/λ , both maximas are first order and so n = 1 for both, set them equal & cancel d as it is the same for both. Then you just have sin(30)/486 = sinα/77.76 , α = sin^-1(0.5*77.76/486) . I notice this is just (1 + v/c)sinθ = sinα, or sin^-1(1.16sinθ) = α. Is it worth memorising this fact to save time in an exam? Or are there cases where it wouldn’t work?

[@osmansadat9650]

Some of the things you are doing are things I would have never even imagined to do in the exam. How do I improve this ?

[@zhelyo_physics]

Interesting question, I'd say lots of experience solving and trying to learn as much as possible from the solutions you see on the videos. After lots of problems you will start seeing lots of patterns and types of problems you have seen before. You got this!

[@pro0619]

2d momentum makes question life and moments

[@zhelyo_physics]

Ahaha, and 3d momentum? Actually, once the principle is sorted, 3d momentum is just a calculation away. You got this!

[@mikejugo8354]

the video title has a mistake haha, intentional?

[@zhelyo_physics]

😁

[@Shubhyduby]

😆was the video title mistake intentional? Also thank you for putting out tip videos like these. They help a lot for people like me who self study physics. Thank you.

[@zhelyo_physics]

All my misteaks are intentional! 😂 Thank you for the kind comment, I try to make the content as useful as possible, very glad to hear!

[@laeyak6550]

I love these types of videos! Very useful :D

[@zhelyo_physics]

Glad to hear! Thanks a lot for the comment!

[@urdudebatesabdulmoeez]

You are the best physics teacher

[@zhelyo_physics]

Thank you so much for the kind comment!

[@matthewjackson337]

but for this momentum question wouldn't y be negative as it's going opposite vertical direction than x?

[@zhelyo_physics]

yep! if you were to arrange for v2 you'd get a negative answer. The question was asking about the value of the ratio. Excellent point though, I think the options should be negative.

[@laurenellison7592]

Mistakes* in case you want to change the title :)

[@engineeringmadeasy]

In your videos have you highlighted all the definition we need to know for the exam?

[@zhelyo_physics]

I have included them as part of the revision videos in this playlist: kzbin.info/aero/PLSygKZqfTjPC3hJ7nRSnnXTw3tI_o67dR&si=DUsCP43ZaTl6pCJz

[@engineeringmadeasy]

@@zhelyo_physics Yup, Thanks a lot. I will be go through these video to revise for the next year exam. I really appreciate your help. 😃

[@erkanfnr]

mistakes* not misteaks

[@engineeringmadeasy]

How common is it that Exam board (OCR A) asks for definition?

[@zhelyo_physics]

they do pop up a few times in an exam series, a little less common than they used to in the past. Hope this helps!

[@engineeringmadeasy]

Hi, do you know if a 23/24 years olds who is self studying A Level Maths and Physics can compete for British Physics Olympiad?

[@zhelyo_physics]

I think you need to be in Year 13 or younger but it's worth double checking with the Olympiad organisers