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Physeeks
Malaysia
Приєднався 14 жов 2021
Physics Videos for A Levels ( both AS and A Levels) that are suitable also for JEE, IB, or other Year 12 and 13 Physics classes. They are released regularly and arranged in playlists for a full course that covers the syllabus.
Maths videos are also published: for Statistics and Mechanics at the A Level Maths level.
Maths videos are also published: for Statistics and Mechanics at the A Level Maths level.
Circular Motion and Centripetal Force- IGCSE Physics
Here we talk about objects in circular motion and the centripetal force, which acts towards the center. We also talk about how different characteristics of the object in motion ( its speed, its mass, its radius of motion) affect this centripetal force. Additionally, we also cover why an object in circular motion is said to be in acceleration, even if it stays at the same speed.
Переглядів: 3 177
Відео
Parallelogram Law to find Resultant Force - IGCSE Physics
Переглядів 2,8 тис.Рік тому
Here is how to use the parallelogram law to find the Resultant of two forces acting at an angle with each other. This tutorial covers the step-by-step guide to use this method. In addition, we also talk about the qualities of a parallelogram. Hope this helps!
All Equations of Gravity | A Level Physics | Summary
Переглядів 1,7 тис.Рік тому
Here I summarize all equations of gravity, like gravitational field strength, gravitational potential, Newton's law of gravitation, and orbital speed as well as period using the newton's law of gravitation.
Gravitational Potential Questions | A Level Physics | Formulas, Key Words, Graphs
Переглядів 2,3 тис.Рік тому
Here's a video explaining how to answer Gravitational Potential Questions in A Level Physics. It can often be tricky because it can be confused with Gravitational field strength, gravitational potential energy, and also gravitational force. For all these different values, we will have different graphs. In this video we will delineate these graphs and talk also about gravitational potential grad...
Photoelectric Emission Questions: A Level Physics (Graph Analysis, Definitions, Work Function)
Переглядів 900Рік тому
Here we learn how to answer photoelectric emission questions in A Level Physics: this question in particular is taken from paper 41 MJ 22. We learn how to analyse the graph for a photoelectric emission experiment and conclude qualitatively and quantitatively on it. We calculate the work function by using the threshold frequency. The gradient and intercept of the graph are explained.
X-Ray Production | Medical Physics | A Level Physics
Переглядів 3,1 тис.Рік тому
In this video we talk about X-ray production in xray tubes. We start off by defining x-rays and differentiating it with gamma rays. Then we talk about the various components of an x-ray tube, which allows us to produce x-rays: like the cathode, anode, vacuum, tungsten metal target, e.t.c. These components can work together to create an acceleration of electrons, the deceleration of high-speed e...
How to answer X-Ray Questions: A Level Physics (9702 41 MJ 22)
Переглядів 1,8 тис.Рік тому
In this video we solve an X-Ray question (the designated medical physics question). It is a very typical X-Ray question that you would most likely come across. I explain how to explain the process of production of x-rays, CAT scanning or CT scanning, the attenuation coefficient and how to calculate the detected intensity of x-rays, and also how to answer questions on contrast in x-ray pictures.
How to answer Oscillations Questions in A Level Phyics (Simple Harmonic Motion, Resonance)
Переглядів 4,4 тис.Рік тому
How to answer questions on simple harmonic motion and resonance in a level physics: paper 4, the structured questions in A2 Physics. There are formulas, tips and important wording to help you.
Answer Gravity Questions | P4, A Level Physics: key words, tips, and formulas
Переглядів 906Рік тому
let's solve a gravity past paper question together: 9702 41 MJ 22. This is one of the most common gravity questions, it's useful to know how to solve these to save some time. I explain the key words for this question like the newton's law of gravitation, important formulas that must be memorised, and also give you tips for answering such questions better. Good luck for your studies :)
How I got an A* in A Level Physics in 1 Year | Strategy + Tips + Resources 🪐
Переглядів 1,5 тис.Рік тому
here's How I got an A* in A Level Physics. I enrolled in a 12 month course and started studying at around October 2021 and took the exams at around November 2021. I give tips about each paper: the practical paper, the MCQ paper and the Subjective paper. I also give my general studying plan for physics: this was suited to my 1 year plan. The resources are my notes and the explanations of them! H...
Nuclear Fission & Fusion | Nuclear Physics and Radioactivity | GCSE Physics
Переглядів 212Рік тому
This video is all about nuclear fusion and fission, and the ways in which we harness nuclear energy. We use the isotope of Uranium-235 to explain fusion, and look at a nuclear reactor. We use the fusion of deutrium and tritium to form helium, which serves as an example of fusion. This is suitable for IGCSE Physics, GCSE Physics, or O Level Physics, as well as A Level Physics.
The Physics of Blue Skies and Red Sunsets | Rayleigh Scattering
Переглядів 3952 роки тому
Why is the sky blue? Why are sunsets red? Why is the sun yellow? This can all be described by Rayleigh scattering, an elastic scattering of light photons. I am trying something new- by delving into some edutainment. Rayleigh scattering is one of my favorite topics that I learnt this year, and I am glad to share it. Thank you for watching :)
All Equations of Astrophysics | A Level Physics | Summary
Переглядів 4,3 тис.2 роки тому
This video is a summary of Astrophysics : The entire chapter of A Level Physics. We talk about all the formulas and equations of astrophysics. We explain luminosity, radiant flux intensity, Wien's displacement equation, redshift, the age of the universe, the inverse square law of flux, black body radiation, stefan-boltzmann law, Hubble's law, standard candle, Cepheid variable stars, and more. T...
Summary of All of Oscillations | A Level Physics
Переглядів 13 тис.2 роки тому
Hello! this is a summary/crash course of ALL the content in oscillations in A Level Physics (simple harmonic motion, damping, resonance) This is primarily based off the CIE syllabus, but it should cover most of the core of other boards. Do take a look at my more detailed videos in the playlist for A Level Physics if you want to learn more about the individual subtopics. 00:00 What is an oscilla...
Ultrasound | Medical Physics | A Levels
Переглядів 3,4 тис.2 роки тому
This video is about Ultrasound in medicine. We talk about: -what ultrasound means -production of ultrasound pulses using a piezo-electric crystal, usually quartz crystal, which is a transducer -acoustic impedance and how it affects the intensity reflection coefficient -the absorption of sound waves as it travels in a medium Thank you for watching!
Positron-Electron Tomography (PET Scan) | Medical Physics | A Levels | New Syllabus
Переглядів 5 тис.2 роки тому
Positron-Electron Tomography (PET Scan) | Medical Physics | A Levels | New Syllabus
Alternating Current (A.C.) | A Level Physics
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Alternating Current (A.C.) | A Level Physics
Faraday's Law, Lenz's Law | A Level Physics
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Faraday's Law, Lenz's Law | A Level Physics
Electromagnetic Induction & Magnetic Flux Linkage | A Level Physics
Переглядів 1,5 тис.2 роки тому
Electromagnetic Induction & Magnetic Flux Linkage | A Level Physics
The Hall Effect & Velocity Selection | A Level Physics
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The Hall Effect & Velocity Selection | A Level Physics
Charged Particle Tracks in a Magnetic Field | A Level Physics
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Charged Particle Tracks in a Magnetic Field | A Level Physics
Magnetic Flux Density | A Level Physics
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Magnetic Flux Density | A Level Physics
Electromagnetism & Magnetic Fields | A Level Physics
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Electromagnetism & Magnetic Fields | A Level Physics
Line Spectra & Electron Energy Levels | Quantum Physics | A Level Physics
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Line Spectra & Electron Energy Levels | Quantum Physics | A Level Physics
The Photoelectric Effect | A Level Physics
Переглядів 8872 роки тому
The Photoelectric Effect | A Level Physics
Doppler Effect & Redshift | A Level Physics
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Doppler Effect & Redshift | A Level Physics
Polarisation of Light & Malus's Law (New Syllabus) | A Level Physics
Переглядів 1,2 тис.2 роки тому
Polarisation of Light & Malus's Law (New Syllabus) | A Level Physics
Kirchhoff's First & Second Laws | A Level Physics
Переглядів 7 тис.2 роки тому
Kirchhoff's First & Second Laws | A Level Physics
Diffraction Gratings | Superposition & Interference | A Level Physics
Переглядів 5932 роки тому
Diffraction Gratings | Superposition & Interference | A Level Physics
How are the units m/s^2? Is it not m/s ( I just looked at dimensional analysis )
You are a master of inspiration
For the last question, I stared at it for so long since there was something that just seemed off to me. First off, I think, if we disregard the direction of g (i.e. making the g graph curve on the same side of the x-axis), we will lose marks. Because g is always a vector; the gravitational force formula is F = GMm/R^2 and the 2nd law formula is F = ma, from this we can conclude that the acceleration here is GM/R^2, so it does have a direction and it is a must. Also, the value of potential gradients at surface of either side of the objects seems wrong too, I second the part where "g value must be divided by 3 since the mass of the moon is way smaller than that of the planet"; however, we have to be aware that the formula for g is GM/R^2 so not only M is taken into account, but also the radius R. Apparently, from the planet to moon (2R --> R) it is divided by 2. Notably, there is an inverse square relationship between the two variables so multiplying R by 1/2 makes the g value to be multiplied by 4. If we consider this factor change, the potential gradient g at surface of moon should be 4/3R. The factor 4/3 is bigger than 1 so it is not a decrease but an increase, if we set 30 small squares for the planet, we should need 40 small squares for the moon's gravitational field strength.
lxol OxcxccmxcoZ, ccc
As a 12 year old, suprised I under stood this.
Thank you so much!! Love this video, really helped!!
Girl, I came here to revise and now I just wanna be your friend 😟
thank you so much !!
I dont understand question one part c
If you know the total energy formula, it is 1/2mw(2)xo(2), it says in the question that the length increases but the total energy remains same. so if the lenght increases the amplitude increases, and according to the question the total energy has to be constant so the omega decreases.
@@ivim8364 thank youu🙏🏻
Hi which exam board is this?
You are so good at this. I have been like, dying to know why the it was proportional to the inverse of the radius squared and when you talked about the inverse square law it made so much sense. You're by far the best at explaining this syllabus out of everyone else I've watched, thank you so much for making these videos
great video. thank you.
I see that I'm the first comment from 2021, unfortunately you don't deserve this as your explanation is simple and right. I have some issues understanding some word and their meaning but I think this is because of my English but still. Hope you see this comment and keep the hard word and the bright passion for science.
Honestly, your videos have literally saved my grades and my life. Thank you!!!!!!!!
THANK U SO MUCH UR AMAZING
best video on this topic
U are the best❤❤❤
thanks for making this
Music is disturbing
Same bro, for me it's more because I watch videos on 2x
Thank you so much for your videos, they are very helpful
Thank you
Positron emission tomography?
Thank you from Bharat
come back
If anyone knew that September 11th 2001 was a real world attempt at this experiment
helpful
Amazing vidd!! sum good shit, could u share the notes too pleasee, would help a ton!!!!!!!
🎉❤It's cool
I ❤ love this very much you explain it very simple I can understand it.
Your videos are way too underrated
Wow! The video was so straightforward 😅
Thanks bro, it was really helpful🙏🏻
the video is very helpful but i would recommend reading the p as P, it is not rho, rho is symbol for density(ρ). in pV = nRT, its the letter P which stands for pressure. i was kind of confused at the start and had to double check, regardless great work thank u
Hey I was wondering if you have covered all the 6 objectives of PET Scan in this video??
Wtf😭
thanks for the help , highly appreciate these vids
Saviour
Sorry but the video is completely incorrect. Omega (W) is the angular velocity and is not dependent on the radius r. Omega = 2*pi/T or 2*pi * f where T is time period and f is frequency. These variables are constant for a given point so omega is also constant. The video is correct regarding linear velocity, v since the outer pebble has further to travel (larger circumference, 2 *pi*r) in time period, T. The centripetal force for a given point cannot be different depending on which equation you use!
u da goat
could you make videos on some past year questions related to the temperature and thermodynamics topic?
Such a concise explanation! Thankyou for this. I wanted to confirm. As for the new syllabus A scans and B scans aren't included right?
Please make more mechanics videos my exam is in a month and ur explanation is too good thank you
please make a summary video for this chapter!
Arigato
tysm
i have an exam tomorrow, thank you sm for this!
Amazing video for revision, thank you❤❤❤
Crystal clear concept. your voice❤ Country name?
I have my igcse O levels soon and for some reason radial relationship was in the book for some reason and got confused. Thanks!
Is sharpness of X-rays in the syllabus anymore