# Recent content by lntz

1. ### Definition of an Asymptote

Hello, i'm having some trouble understanding the definition of an asymptote, or rather the conditions that must be met in order for a line to be one. I have; "Let f : A \longrightarrow B be a function and A \subset R, B \subset R. A straight line is called an asymptote if one of the following...
2. ### Trig identity help

Hello there, I have a problem i'm hoping someone can help me with. I'm writing a bit of code for computing the value of pi that converges faster than a previous piece that relies on the leibniz series. Anyway, i'm struggling with showing how this identity arises. tan(2t) = 2 * tan(t) / 1 -...
3. ### Photons, no mass and momentum

Thanks for the reply. I should have thought this one through! I really should have realised the path would be different for the two observers...
4. ### Photons, no mass and momentum

Hello, I have a question that i'd like to ask, but the wording is a little tricky, so I hope you can get the gist of what i'm trying to describe. I was thinking about the thought experiment that is often used to describe relative motion - a light clock on a train passing through a station...
5. ### Information travelling faster than light

Is there a name for that theorem? I'd like to have a look-see :) I imagine it's a similar story for all the words we use in mechanics, such as "light", "inextensible" and "point"
6. ### Concept to extract heat energy from objects

If what you're looking for is an efficient way to 'extract' that energy from an object, you simply need to place the object in a large temperature differential with good conductance. It's basically a fridge.
7. ### Schools Chemistry or Physics? College Course - Year 11 Australia

Both courses will be very interesting (at least in my opinion) and can lead towards some really rewarding careers. I don't think you can make a mistake in that regard - what you must do is figure out which one you truly love more. I speak from experience when I say it's important to study...
8. ### Concept to extract heat energy from objects

Q = M . C . dt (How do you get the triangle symbol) is how I write the equation, but they are the same thing. You should work in kelvin really, but a change of 1 in either unit is equal so that's no big deal here. Anyway, 0k is ~-273 degrees celsius. What your equation says, is that it takes...
9. ### Science or technical drawing in hs

It really depends on what you hope to achieve and what you truly enjoy. If you want to finish high school and find a carpentry apprenticeship for example, then wood working may be more useful. Similarly technical drawing could be useful for graphic design courses or an Architecture degree...
10. ### Schools High School Math vs College Math?

I'm not especially familiar with set theory, but from what you have said, perhaps it's just never been called that when we use it to discuss other things. Quick question, is Set theory what Frege worked on and where Russel's librarian paradox comes from? I only know the "Tale" rather than...
11. ### Maths requirements for aerospace engineering

Hello, right now I am a first year architecture student in the UK, but i'm really not enjoying my course as much as i'd thought I would. I think I surprised my family when I chose this path, as they all assumed I would do something either in science or engineering. Anyway, I am considering...
12. ### The length of an uncoiled spring

Hi there, my question is how would I find the length of an uncoiled spring? I hope that is clear enough, but other ways of explaining what i'm looking for look like this: How would I find the length of a line that made a spring x meters high? Or how would you know how long a piece of...
13. ### Some mathematical formula

PV=nRT is the ideal gas equation. I'm not sure if i'm missing something related to an "abstract cylinder".... Re-arranging for pressure give p = nRT/V p = pressure n = number of moles of gas R = 8.31 T = temperature in Kelvin V = Volume of container I hope that helps
14. ### Heisenberg's uncertainity princple

Part of the lecture series by Feynmann on QED delves into the heisenberg principle. They have been turned into an accessible set of books by an author, but they are essentially transcripts. I used them during my A-levels and found it useful
15. ### Logic behind the number of combinations of numbers

Sorry my maths is lacking... why do you multiply the numbers, and not add them.