A level Physics 42tutoring

Read this article to find out what questions you should be asking to find the best tutor for your child:

https://page.42tutoring.com/post/choosing-tutor-hard

Our A level Physics Summer School Workbooks are being posted out today! 😍

We start next Monday, 10th August.

SI units feature in this month's Physics World magazine from the Institute of Physics.

The image shows the 7 base units, from which all the other units can be defined, however, the article explains how these base units don't tell the whole story, which is very "quirky" and ultimately human.

Go here to read the full article:
https://physicsworld.com/a/the-international-system-of-units-constantly-evolving-but-forever-quirky/

Lithium-ion batteries have more power per kg than sodium-ion batteries, and can be recharged more times. Worldwide there are 8 billion lithium-ion batteries just powering our mobile phones, plus millions of laptops and electric vehicles.
So how can sodium batteries save the world?

The main draw-back to sodium-ion batteries is their lower power to weight ratio, but this is being improved at an impressive rate, as the technology is being pushed in China.

Applications where weight is less important are of particular interest. For example, storing renewable energy from solar or wind, to use when it is dark and the wind does not blow. This could be a game-changer for world-wide power, releasing the whole world from dependence on fossil fuels and the horrible consequences of war over oil and climate change.

Click on this "Nature" article to read more:
https://www.nature.com/articles/d41586-026-02150-y

Your complete A-Level Results Day 2026 guide. Learn what happens on Results Day, how UCAS and Clearing work, reviews of marking, key deadlines and your next steps.

Fully researched and fact-checked

https://page.42tutoring.com/post/Results-day-2026

Free "My Journey into F1" online talk TONIGHT!!!!
Friday 24th July, from 7 to 8pm

Oliver Lock, is working as a Mathematician/Data Scientist/Engineer at Williams Formula One. He is giving his exclusive talk for 42tutoring registrants.

Click on this link to register and get sent the zoom details:
https://api.leadconnectorhq.com/widget/form/9AEVkdlTMtn8q9eH4nss

Ten Exam Techniques you 𝘯𝘦𝘦𝘥 to learn:

1. Your Workplan (what to do to prepare)

https://42tutoring.co.uk/workplans/

2. Deep Question Analysis (how to know what the question is really asking)

3. Knowledge of your data sheet (essential and much more important than most people believe)

4. Assessing papers and examiners reports (a holistic view leading to insights and knowledge of why questions are asked the way they are, leading to clarity on how you should answer)

5. How to solve problems (or what to do when you don't know what to do), including

(i) The number equation

(ii) How to deal with rates and flows

6. Command word scaffolds and frequencies (how to structure your answer so as to hit the things on the mark scheme)

7. Improving your odds in multiple choice (leads to massive increase in speed and maximising your marks

8. How to answer 6 mark questions (Don't write "War and Peace", just the things which will score marks), including

(i) Getting your subtitles right

(ii) The 1-1 nature of Q to A

9. Learning Loop and how to "revise" (don't "revise", do this instead)

10. Your Gameplan (what to do, minute by minute in the exam, so you don't run out of time)

Go to my "Exam Secrets" video to learn more: https://youtu.be/pfIgE-eWvhU?si=2iGs1xbtL4LxZnNU

Free career talk: "My Journey into F1"
Friday 24th July, from 7 to 8pm

Oliver Lock, is working as a Mathematician/Data Scientist/Engineer at Williams Formula One. He is giving his exclusive talk for 42tutoring registrants.

Click on this link to register and get sent the zoom details:
https://link.msgsndr.com/sp/c31561b57f2

What is the difference between Dark Matter and Dark Energy?
This is something lots of students are not clear on, and many think Dark Matter and Dark Energy are the same thing!
Dark Matter and Dark Energy are fundamentally different! They have opposite effects - so if you are someone who is not sure about them, read on...

Dark stuff of both sorts makes up (it is estimated) about 96% of the universe. So less than 5% of everything is visible to us. That includes everything on Earth including your family and everything you love, all the chocolate in existance as well as all the stars and planets you have ever seen.

Dark Matter is just exactly what it says. It is matter which does not interact with light (electromagnetic waves) and so cannot be seen (in any wavelength). This includes all uncharged particles and Dark Matter is probably mostly neutrinos.

Dark Matter behaves like visible matter, in that it has mass-energy and feels gravity and so Dark Matter is pulling on all the visible and invisible mass-energy in the universe.

Dark Energy, on the other hand is the name we give to the exotic stuff which causes the universe to expand. Whatever Dark Energy is, it is pushing/repelling the stuff-of-the-universe apart and causing the universe to accelerate away from us (everything) and expand. So Dark Energy (repelling) behaves exactly opposite to Dark Matter (which is attracting mass-energy together).
https://www.skyatnightmagazine.com/space-science/dark-matter-energy-difference

A few fun facts about gases...

Kinetic energy of a gas molecule = ½ m c² = (3/2) k T

The c in this equation is the 𝗮𝘃𝗲𝗿𝗮𝗴𝗲 speed of the molecule.

This graph shows that the less massive He atoms have a higher average speed for the given temperature (room temperature here).

It also shows that the spread of different speeds is much greater for the He atoms.

It also shows that the argon atoms (with a mass close to oxygen and nitrogen molecules) has an average speed of about 400 m/s!

So you are constantly being bombarded by microscopic missiles traveling faster than the speed of sound (approx 330 m/s)!!!