Recent content by physics noob

hey, I am look over some equations given to me by my instructor, and I am reading the book and i cannot find what they do k= 2(pi) / wavelength......what is k and theta_p = tan^-1 (n2/n1) what is theta_p and dx/L = m(wavelength) what is d and x...

...i GUESS i can live with it...lol...thanks guys

actually, I am kinda stuck again,,,,, if i used V=c,,, then i would get a wavelength of 3750m, and then when i try to find frequency of E field, i would get that it has the same frequency of B field, becuase A=B B=C...

thanks for your help, i got it now, forgot that c=V thanks again

hi guys i had a quick question about EM waves given EM traveling west, B field oscilates vertically and has f= 80,000 Hz and a rms strength of 6.75e-9 T what are the frequency and rms strength of electric field and what direction... so for direction i have it...

no, no inductance...you said use the square of the sine function, but doesn't that depend on angular frequency and time?,... can i just use Vo = IoR ?

me again...im pretty sure i messed up every step on this problem... still need help

V0 = root2 * Vrms got it

hey guys, here's my problem... coil connected to a 240 V (rms) ac line has a resistance of 34 ohms. what is the average power used (.5)V^2 /R so Pav = 847 W then it asks what are the min and max values of the instanteous power...

so would Q=0 inside the shell since all charges are found on the surface of conductors? thanks everyone for the help

yes, it does,,, so i guess i would just describe what the electric field does,,, i think I am getting confused because of the lack of numbers, i guess i just explain what's happening. thanks

ok here the problem I am having... a point charge Q rests at the center of an uncharged thin spherical condcting shell. with is the the electric field E, as a function of r...then it asks for r less than the inner radius of the shell... then it asks for inside the shell, and finally beyond...

ahhh, i see now,,,, cause in the circular motion only the x velocity is pertantent to SHM...thanks a million doc,,,, you run a great place here!

ok here how i did it,...im gettin an answer of 150m first find the acceleration in the negative x direction the brackets can exert which is. 8000=(6000)a a= -1.33 then find the time it takes to stop using v=vo +at...

wait, I am pretty sure my professor said that's exactly what you can relate it too,,,, it has the same movement and velocity as circular motion