Recent content by Fluorescent

Would it not just be: v*t = 2∏r?

I think this is probably the right place to put it, didn't really fit anywhere else. I've got the joyless task of writing a lab report at university and need to put a graph in it, ideally with error bars. I don't have a problem with error bars normally, but I'm coming unstuck about what to do...

Homework Statement Determine the values of k for which the system of linear equations has (i) a unique solution, (ii) no solution, (iii) infinitely many solutions. Write down the complete solution in cases (i) and (iii): x + y + kz = 1 x + ky + z = 1 kx + y + z = 1 Homework Equations...

Thanks for the reply! Are you sure there's not a second way of doing it because in the second part of the question it asks me to "compute the total energy stored in the capacitor". If I did it your way, surely I'd be doing the same thing for part i) and ii). Although from the outset it's...

Homework Statement It's told me to treat two charged concentric sphere's as parallel plates with Q=5nC on one, and -Q on the other (both with uniform spread). The distance between them is 5mm, and the surface area of each plate/sphere is 0.13m2. Calculate the energy stored in the electric field...

Homework Statement A ball is projected vertically upwards from the top of a building that is 25 m high. After a time of 3 s it passes the edge of the building on its way down to the ground. In this question, g=10ms-2. a) What is it's initial velocity? Homework Equations s=so + vot +...

Hey, I know this threads yonks old, but just wondering, does anyone know where the poster got the very final bit from: Thanks :) Edit: Isn't it strange how you see it once you've posted the question haha! Thanks anyway, problem solved.

In the midst of writing my personal statement, I've come across a problem, which my teachers haven't really given me a definitive answer about. Should the words Physics, Chemistry, Biology and Maths have capital letters at the start or not? Thanks in advance, iVertigo :).

Homework Statement Firstly, whilst reading all this more complicated (and far more interesting) physics in other threads I feel like a dunce posting something which is probably of 'lower' level here as it were, but here goes: If we have a vehicle like a police car (with siren going) moving at...