Recent content by Dgray101

Alright, Refined Answer: The quantity U+V is what would be used in this case. Since we are concerned with their relative speeds as measured by me, then it is true that the rate of change in their distance is V+U since both velocities are measured according to me. If we were to use the relative...

Let me pose my question this way in particular " You know the answer is U+V, explain why you would not want to use the relativistic formula for velocity addition."

I mean I sort of get why the U+V makes sense, but what I don't quite understand is why it is not permissible for this problem to specifically use the relativistic transform.

Sorry guys I am still a little unclear as to specifically why it is wrong to use the relativistic velocities compared to the U+V formula :S

The wording of the problem is weird I totally agree. My professor picks out problems that confuse the entirety of the classroom. So it would be improper then to use the relativistic formula over just simply U+V?

Sorry Vela I did use the text notation. It becomes a little problematic as our professor teaches out of one textbook but he assigned us a different textbook for the class, so I find myself in autopilot now.(makes no sense at all...). Anyways... if there are more comments feel free to shed some...

Vela if you were to answer the question how would you have said it? I just want a different view on it. Our professor is HORRRIBLE at teaching. He is a relativist but he is god damn horrible at teaching in lecture, everything I have learned has been self taught either from the book or the...

Homework Statement Two objects fly toward you, one from the east with speed u, and the other from the west with speed v. Is it correct that their relative speed, as measured by you, is v+u? Or should you use the velocity addition formula, V=(u+v)/(1+uv/c2)? Is it possible for their relative...

Hey guys so we need to find the basis for 0 1 \sqrt{2} 0 0 0 0 0 0 I know how you do it. But my prof says that one of the basis vectors is (1 0 0) but I don't know how he arrives at this?

I am having a bit of trouble understanding something in my textbook and was wondering if you guys could help clarify. We just learned Faraday's Law that a time variant magnetic field will enduce an emf in a coil. What my textbook says is that " The electric field in the loop is NOT...

Homework Statement We threw a bunch of darts at a dart board to find the statistics of the positions. They ranged from -20 to 20 and the data is right here. ( each column corresponds to the dart number, it is just a syntax thing) The frequencies are below. Dart 1 Dart 2 Dart 3 Dart 4...

I think I did the similar thing to what you did, but instead I multiplied the top row by the complex conjugate to row reduce.

May I ask how you did that because I keep getting the same answer even redoing the problem...

Homework Statement Given A = [ (3,-7),(1,-2) ] and λa = \frac{1}{2} + i \frac{\sqrt{3}}{2} find a single eigenvector which spans the eigenspace. Homework Equations The Attempt at a Solution So I row reduced the matrix to get [(2, -5 + i\sqrt{3}),(0,0 ] and from here we can...

Oh okay so remg - rnMg = 0 re = (rnM) / m Then pluging that into the sum of re and rn --> r = (M+m)rn / m So now could we sub r into the original equation in the problem statement and solve for m*?