Recent content by DizzyDoo

Hi, just some quantum physics questions. I've given them all a good go, the first two just require checking, but the rest I'm rather stuck on. They're the last questions in about 20 other ones, and my head now hurts. :( Any hints are very much appreciated! Homework Statement I firstly...

This has been bugging my (and my program) for a few days now. I'm searching for a way to convert a string (or more properly; a collect of characters) to a Real data type. I'm new to Fortran, but as I understand it there seems to be no intrinsic function to make this easy. I have tried various...

Homework Statement Next lesson, I am doing a water drop experiment. The basic idea is that a drop of liquid food colouring will be dropped from an eye dropper at different heights. The diameter of the wet mark that is left is then recorded for all these heights. I imagine I'll then plot a...

Thanks! Gotta hand it in later today, so we'll see if I've got them right.

[SOLVED] Checking: Circle Equations Questions Last time I got people to check my homework here, I got things marked wrong when they where said to be right. Let's see if it happens again... Homework Statement (1) The circle C has centre (3, 4) and passes through the point (8, 8). Find...

Hey thanks, that's a great explanation, I've finished off question 18 quite comfortably. Any help with question 19?

A couple of hard questions about the Factor and Remainder Thoerem that I'm having a hard time with. Homework Statement 18) f(x) = 2x3 + x2 – 5x + c, where c is a constant. Given that f(1) = 0, (a) find the value of c (b) factorise f(x) completely, (c) find the remainder when...

Some questions about transforming graphs that I would like a hand with. I've given them educational guesses, but if someone could take a look at them, that would be great. Homework Statement 2. Explain the difference in the transformations to the graph of f(x) by f(x+2) and f(x)+2. 3...

[SOLVED] Three Difficult Materials Questions (check my answers!) Hi there. As you can see below, there are three questions on materials, that are quite difficult in my opinion. I've given my best attempt at them, checked them, and I think they are correct. However, as I am prone to making...

The last question on my homework (always the hardest). Homework Statement A wire of diameter 1.0mm and length 2.3m is made of copper. Young modulus is 1.1 x 10^11. Find: a) The cross-section of the wire in m² b) The strain if the wire is stretched by 0.85mm c) The stress d) The force...

[SOLVED] Archimedes Crown Question Hi, This is the last question on a homework sheet, based on that interesting Archimedes story. "Archimedes put a golden coloured crown in some water an the level rose by 410cm^3. He then weighed it and found its mass to be 2.42kg. Was the crown made of...

Fantastic, I can finish off the rest of the questions now. Thanks!

[SOLVED] Basic Differentiation Hi there, I've heard that this forum is the best for getting some quick help. Find the gradient of the tangent to the curve at the given point: y = 2x² + 3x + 5 when x = -1 Homework Equations Right, I'm very new a this, but dy/dx is the way to go right...