A level Physics 42tutoring

You DON'T need to remember the equations but you do need to know what each of the symbols in each equation mean

And EVERY symbol is used more than once - so you must be able to tell from the context/equation which meaning is which...

😱

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𝗣𝗿𝗮𝗰𝘁𝗶𝗰𝗮𝗹 𝗣𝗵𝘆𝘀𝗶𝗰𝘀
Have a look at the multi-meter in the photo.

Do you know what the different settings mean?

For example, if the rotary switch is pointing towards 2000m in the 𝗩 - section, this means the meter can read up to a 𝗺𝗮𝘅𝗶𝗺𝘂𝗺 of 2000mV (also known as fsd or full-scale-deflection) dc potential differences and the leads should be plugged into the COM (common) connection and the V connection. The meter should be connected in 𝗽𝗮𝗿𝗮𝗹𝗹𝗲𝗹 to the circuit being measured.

Make sure you know what 𝗮𝗹𝗹 the settings mean and how to use the meter as a 𝘃𝗼𝗹𝘁𝗺𝗲𝘁𝗲𝗿, 𝗮𝗺𝗺𝗲𝘁𝗲𝗿 𝗮𝗻𝗱 𝗼𝗵𝗺𝗺𝗲𝘁𝗲𝗿.

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There must be an unbalanced force towards the centre of the circle when things rotate.
Many students mistakenly believe this is a force in its own right - but that is not correct.
The centripetal force must be the resultant of the other REAL forces present in the system.

So, for example, in order to stay on this roundabout, without sliding off, there must be friction, acting towards the centre. The friction is the centripetal force.

For a planet going round the sun, the centripetal force is the gravitational force, W=mg (normally called weight).

For a charged particle going in circles in a magnetic field, the centripetal force is the magnetic force, F=Bqv

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Cup cake cases are often used to teach about terminal velocity in Physics.

Where the weight is balanced by the drag force... and there is no net/resultant force on the cupcake case.

Did you know that it only needs to drop about 20cm before a cupcake case reaches terminal velocity.

Of course a cupcake case with a cupcake in will take a much greater distance to reach terminal velocity, but then you wouldn't drop that - would you?

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Happy Summer Solstice! 🌄☀️😎🌅🔆Today at 9:24am
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Our secret weapon is our Exam Techniques teaching, recognised in this new 5* review from one of our y13, who has just finished. Thank you Daniel!

Congratulations to everyone who has finally finished their A levels!

Are you a Physics student who struggles to get higher than a C? Do you want to know a secret from a head of Physics?

Most of the students who come to 42tutoring are not struggling with A-level Physics because they don’t understand the content. In fact, many of them are clever, motivated, and genuinely enjoy physics — they can talk you through topics like momentum, circuits, and electromagnetic induction without a problem.

So why are they still getting Cs, Ds… sometimes even Us?

Here’s the painful truth:

You can understand the physics perfectly and still do poorly in the exam.
Because understanding the physics isn’t the same as knowing how to answer the questions.

And the worst part?
Students don’t even realise this is what’s happening.

If you want to learn more, book a call with me, Dr Camacho:
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Electron capture is when an orbital electron falls in to the nucleus and combines with a proton to produce a neutron and an electron neutrino. The electron neutrino is needed to conserve the electron lepton number. The W boson is usually produced by the proton, as it is the more massive/energetic particle, so to conserve charge it is a W+ boson that is formed. (An electron can produced the W boson, but if it does it will be a W- to conserve charge)

So the answer is A