Recent content by PirateFan308

Hmm, I'm not quite sure where you believe I added velocities. I used Lorentz transformations to find that v_x'=0, v_y=c/2, v_z=c/2. Where v_x' = \frac{v_x-u}{1-\frac{uv_x}{c^2}} = \frac{c/2-c/2}{1-\frac{(c/2)(c/2)}{c^2}} = 0 and v_y' = v_z = \frac{v_y-u}{1-\frac{uv_x}{c^2}} =...

Homework Statement A particle of rest mass m_0 is moving the S-frame at a velocity of u=(c/2, c/2, c/2) . Calculate: a) its energy E and its momentum p in the S-frame b) E' and p' in the S'-frame moving at v=(c/2, 0,0) relative to S Homework Equations v_x = \frac{v_x-u}{\sqrt{1-(v_xu)/c^2}}...

Thank you soo much! I can't believe I missed that - I was freaking out thinking I had the completely wrong idea. Thanks!

Homework Statement What must the emf ε in the figure be in order for the current through the 7.00 ohm resistor to be 1.75A? Each emf source has negligible internal resistance. Homework Equations Kirchhoff's Rule: \sum I=0 junction rule \sum V=0 loop rule The Attempt at a Solution...

I have finished my first year of my undergraduate, taking an Honors BSc in Math with a minor in Physics. I am planning on going to grad school after my undergraduate, and I want to be sure I am not taking too many first year classes. How many first year courses (100 level) courses would you...

Homework Statement I have a final coming up and I am a bit fuzzy on how to create a matrix that represents a rotation or reflection about a certain plane (in R3). Say we are given a rotation/reflection about either a plane or a line through two points T(v)=Av and we are told to find A. Do we...

You're right, for some reason I plugged in half λ. It should have been x^2+40000 = (m+1/2)^2λ^2+2(m+1/2)λx+x^2 which would reduce to x=\frac{40000-(m+1/2)^2λ^2}{2(m+1/2)λ}. Thank you so much! You were a huge help!

No worries - thank you for your help! I first tried answering with 34.94,69.53,113.7,175.78 before I realized that was the distance less than 200m rather than the correct m≤3. Next, I tried answering 175.78,277.1,496.4,1540 and this was also wrong, but I can't find any errors in my computation.

\lambda = \frac{c}{f} = \frac{3.0*10^8}{5.80*10^6} = 51.7m So the separation represents 3.86 wavelengths, meaning there will be a maximum of 3 path differences. As I was thinking further, I drew another right triangle with the distance between the sources being 200m, the hypotenuse being r1...

Homework Statement Two radio antennas radiating in phase are located at points A and B, 200m apart. The radio waves have a frequency of 5.80MHz. A radio receiver is moved out from point B along a line perpendicular to the line connecting A and B. At what distances from B will there be...

Thanks!

Homework Statement Find the volumes of the solids revolution obtained by rotating the region about the x-axis and the y-axis. y=2x-x^2, y=0 The Attempt at a Solution I know how to get the volume of a function that is rotating around one axis, but the "y=0" is confusing me. Because...

I got it - thank you!

So if v_L=\sqrt{Y/\rho} and v_t=\sqrt{F/\mu} then \sqrt{Y/\rho}=30\sqrt{F/\mu} which is equivalent to Y=\frac{900F\rho}{\mu} Y=\frac{Fl_0}{Al} so \frac{F}{A}=\frac{Yl}{l_0}=\frac{900Fl\rho}{l_0 \mu} but l\rho = A and \mu = \frac{mass}{length} ~~so~~\mu l_0=mass so...

v_L = \sqrt{\frac{Y}{\rho}}??