Recent content by Reason

You might already have heard of the book "Gods of the new millennium" from Alan F. Alford. If you don't know what it's about, this is what the back of the book says: The appearance of Homo Sapiens 200,000 years ago defies the principle of evolutionary theory, whilst the Biblical account of...

If you hand the solved problems out, at least the students don't wast their time by writing down the solution. Instead they could try to understand it already. Because believe me, when you are writing things down you don't always have the time to understand things too. But this doesn't apply to...

Well a capacitor is actually two charged conductors very close to each other, so there's a voltage difference between them, right? And a coaxial Cable has an inner and an outer conductor, so those two conductors are responsible for the capacitance. That means the capacitance has to be parallel...

Anyone? Or is my question not clear enough?

Attachment And here's the attachment :).

First take a look at the attachment (See reply below). We have to take the oscilloscope's impedance and the coaxial cable's impedance into account. And then we have to calculate the cutoff frequency of this. Given: Oscilloscope: R=1M Ohm // C=25pF Coaxial Cable: R=75 Ohm and C=68pF/m...

What did you study specificly then if I may ask? I'm an engineerstudent at the moment and I was very interested in the physics classes. That's why I'm thinking about studying physics too after I completed my engineer studies. But then again that's another five years added to my engineer...

For those students who live in Europe, has anyone of you participated in the Erasmus exchangeproject? If so, what country have you been too (and where do you come from of course)? How long have you been there? Was it an experience you would recommend? And what did you think of the level of...

I'm an engineerstudent at the moment and I feel like I was really interested in the course modern physics. I'm really fascinated with the theory of relativity, quantummechanics, corephysics (or how do you name it in english?),... But that course was only qualitative and covered only the basics...

I've had one course of chemistry every of the first 3 semesters. It was anorganic, organic and some industrial processes. I'm doing ICT engineering (electronics, computer science) and also having big trouble with chemistry, it really is a pain in the ass (still have to take my last exam of...

So no one knows why water sublimates at this pressure?

The first (upper) drawing is wrong as you can see. You can only have reactionforces in points that are connected to something, which is obviously not the case with the free point at the end of the bar (that point is part of the body you're making free and not connected to anything but the free...

See topic "explanation of torque arm?" that you started earlier. When you have a force at a certain distance then we need a momentum to have equilibrium, it's as easy as that. Without torque no equilibrium. Suppose we have bar with a fixed point. At the free end of the bar there is a force...

Nonhomogeneous system of lineair differential equations This is a given system: D\vec{y} = A\vec{y} + \vec{b} With A=\left\begin{array}{ccc}1&1&1\\0&2&1\\0&0&3\end{array}\right And \vec{b}=\left\begin{array}{c}e^4^t\\0\\0\end{array}\right We find \vec{y}_H = Y(t) \cdot \vec{c} With...

It just applies to the law of "Action is Reaction". When we got a force working on a body (undeformable), we make that body free by adding a reactionforce in the fixed point. Suppose the only thing we add as a reaction is that force. Than in the middle of those two forces we'd get a couple, so...