Search results

I just dont know where to start for even part i. Could you give me some advice please?

I am unsure as to where to start with this question. It is the final question of a 2020 trial paper my friend gave me. Any advice would be appreciated thanks!

Hi all! Can someone explain to me how to do part ii and iii of the attached question please? Working would be greatly appreciated thanks!

Hi guys, I am having trouble doing part b of this question fro the Cambridge textbook. I need to answer and full work to that answer please. I have attached the question. Thanks!

ah ok thanks! i ended up just using algebra by that point and got the answer. appreciate the help!

sorry i made a typo it should be π/5 not π5. thanks for the help on the substitution part though, that was really useful!

ok i was no aware of the v^2 formula. will attempt using this method. thanks for the help man!

Sup lads i'm back, I've worked out most of this question except for part iii of b and part c. I wrote out the whole question just for context. If anyone could give me advice on how to do part iii of b and part c it would be appreciated! a. (i) Find the five fifth roots of unity, writing the...

Ah that makes a lot of sense. Thanks for the help man appreciated

Hello friends, I am having trouble with part d of this question, any help would be appreciated! 8. The cube OABCDEFG has vertices O(0, 0, 0), A(a, 0, 0), B(a, a, 0), C(0, a, 0), D(0, a, a), E(0, 0, a), F(a, 0, a) and G(a, a, a), where a > 0. (a) Use a scalar product to find the angle between...

I don't know where to start with this question, any pointers would be greatly appreciated. A particle is oscillating on the x-axis about the origin. It passes through the point A, where x = 0·01 metres, with speed 0·09 m/s and it passes through the point B, where x = −0·02 metres, with speed...

I was under the impression that spin was a property of the charge? As in it is a fundamental part of a particle, meaning that regardless of movement or not, a particle will always have spin and thus always have a magnetic field. That is my impression of it at least.

Why do static charges not experience a force by magnetic fields? I thought that spin produced a magnetic field for every charge, but the textbook that I am using for questions states that static charges don't experience a force from a magnetic field. Is there some information I am lacking?

Ok, I'll invest more time into the cambridge textbook then. Thanks again for the help everyone!

Yep, we are correct for parts a to d! I think the book is wrong, I don't know where they got those answers from. I thought i was missing something from my working and went over it again and again when i couldn't get the answers at the back of the book its relieving that other people are also not...

I completely agree with you, I also do physics and the question just doesn't make sense. This was taken from my math in focus ext 2 book, if you are saying this is 3 unit stuff would you recommend using the Cambridge ext 2 book instead?

Hello everyone, thanks for taking the time to answer my question! According to the answers to this question, the answer to part e should be 179.8m and part f should be t = 2s, 10s. So I'm wondering if the answers are wrong? I completely agree with the working you guys have here.

Hello this is my first post here :) I am having trouble with part e and f of this question. help me pls haha A rocket is fired vertically from the ground with an initial velocity of 60ms^-1. It is subject to a force that gives it a constant acceleration of -10ms^-2. After t seconds it is x m...