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  1. J

    Very hard mechanics question

    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!
  2. J

    Projectile motion question

    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!
  3. J

    Logistic Differential equation question

    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!
  4. J

    Roots of Unity question

    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...
  5. J

    3D Vector proof

    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...
  6. J

    Mechanics question from Cambridge 4u textbook

    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...
  7. J

    General magnetic field question

    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?
  8. J

    Mechanics question

    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...
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