The GOOD thing about SCIENCE is that it’s TRUE whether or not YOU believe IN IT . I have been teaching A level and AP Physics for 10 years .I also have been coaching students for different International Physics competitions such as AAPT Physics Bowl , BPho , F=ma , PAT ( Physics aptitude test ) for Oxford university admission , NSAA and ENGAA for Cambridge University admission . I want students to understand physics so well that they will see physics everywhere, and use the concepts they learn in class for the rest of their lives. I believe that the more people understand about the natural world, the more they will appreciate it. Follow me on :facebook.com/walayat.ali.5203577 Email:roywalyat@hotmail.com
Please check the following link for kinematics questions including projectile motion and feel free to ask if you have any questions ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Pj0g_sPa0B4.html
Q#3 Smaller diameter and greater length , produces more extension so the answer should be C . Extension = F*Length /(Cross-sectional area *Young's modulus )
Sir Ill start A2 Physics soon, But is there any playlist that will go topic by topic of just theory learning from ground up? Im starting with circular motion
Hello sir in q.17c. Its 12nC so to convert it to coloumb i should write 12×10^-8 right but how and why did you and the markscheme says 1.2×10^-8 nd if i dont do it your way my answer changes how to fix it please tell me a way
@@alevelandapphysics-alithank you soo muchh again in q.18.a the answer of C=2.17×10^-5 so to convert i should multiply it with 10^-6 right ? Why did u do ×10^-1×10^-5 also by doing this calculator doesnt change it to 21.7 it just shows 2.17×10^-6 Sorry a little weak in maths 😔
@@-omar-4214 Capacitors are in parallel if same pd across them and in series if same net charge on them .When charge stops flowing pd across them will be same so they are in parallel .
Stationary waves are formed when two waves of same type are travelling in opposite directions meet(superpose ) at a point . At antinodes, the two interfering waves are in phase ( phase difference =0 degree ) , meaning their crests (or troughs) line up. This constructive interference results in the maximum amplitude of vibration. Conversely, at nodes, the two waves are out of phase (antiphase- pahse difference =180 degrees ). Their crests meet troughs, causing the displacement to cancel out completely, resulting in zero amplitude. At other points ( between Nodes and Antinodes ) , two waves have phase difference between 0 and 180 degrees so there is no complete constructive and destructive interference hence their amplitudes varies between zero and maximum depending on phase difference . Hope it helps . Feel free to ask if you still have any questions .
Sir I just did my exam paper 1, Out of 40 I am sure I did 30 Questions really well i am not sure wether u got it right or wrong but too my understanding and my group discussion I did those 30 Questions really well, the rest 10 were a gamble. I am really not good in physics and especially paper 1. Because of your videos it helped me understand physics a lot better, No other youtuber did what you did. Thank you sir My A levels Next year but Ill start preparing from next month
That's great , hopefully you will get good marks . P4 is a key paper for overall A level grade so spend more time and start preparing as soon as possible . Understanding of Physics depends on "How we study " Physics so always try to understand concepts .
@@alevelandapphysics-ali sir I have one doubt. just recently people are saying for P3 , Pratical if you draw the table in pencil all your marks will be GONE. and I'm getting worried because our teachers thought us with using pencil for graphs and table.
24:39 i have seen this formula for the first time and tmr is p1😢 where did we study thiss and is this in our syllabus😭😭 i only know rho.area.velocitysquare for drag
sir my exam is tomorrow and I'm planning on watching Your Quick Revision for exam AS physics paper will it help me, I'm rlly weak in mechanics so many silly mistakes
Sir in qs 15 how do we know when to use net/resultant force to calculate work done and when to use applied force like used in this qs? Jazakallah Sir! Please pray that the exam goes well!
Yes sir, how do we recognize what the question is asking from us, like in which qs do we calculate work done by applied force and when do we calculate work done by net force. For example in this I thought we had to calculate work done by net force and i wrote the work done in horizontal component is zero since there is no net force and in the vertical component is mgh.
@@maham22 In the question states that block is pushed along a horizontal force and it tells us we need to calculate total work done by the applied force . Most of the time we need to calculate work done by a specific force and specific force is pushing force . If they ask to calcualte net work done it should be stated in the question or they will say calcualte change in KE i.e. net work done
It's better to practice challenging questions from different topics to grasp concepts properly and also do full past papers under exam conditions . I have uploaded 100 challenging questions from whole AS Physics covering all the topics with detailed solution on Patreon ( CAIE A LEVEL Physics ) , you may find them helpful for coming P1 exam .
Sir in Q18, When calculating the final youngs modulus why didn't u take F to be 2 times the tension force in the wire since T is exerted twice in the string?
As acceleration due to gravity is downwards if we take upwards is positive so acceleration due to gravity should be negative bcz it's in opposite direction .
Hello sir. Could you kindly tell me how you have got the formula that relates path difference with the phase difference? I have not seen them in books/notes and how are they derived, like, why is it path diff/wavelength and the same goes for phase diff/2pi ? Please let me know. Thank you.
If a wave A is leading a wave B by a path difference = wavelength /2 , then the phase difference =180 degrees . So the ratio between path difference / wavelength = phase difference /360 degrees .
@@mizukun9037 You can check topicwise questions in CAIE AS Section they are well arranged topic by topic . If you have any questions , feel free to ask here .
