EM Wave direction and frequency

[physics noob]

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 ocscillating horizontally and for rms strength i have E= cB

so E = 2 v/m but for frequency i have no idea


wavelength * f = v but i have no idea what wavelength is... any help is appreciated thanks!

 

[geosonel]

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 ocscillating horizontally and for rms strength i have E= cB

so E = 2 v/m but for frequency i have no idea


wavelength * f = v but i have no idea what wavelength is... any help is appreciated thanks!

you correctly solved the first questions
you're very close to the "frequency" answer.
how is the freq of the E field related to the freq of the B field in this EM wave?
(hint: think "equal")

also FYI:
(frequency)*(wavelength) = velocity = c = 3x10⁸ m/sec
since you know that frequency = 80,000 Hz, you can also determine wavelength of this EM wave (altho it's not required for the problem solution)

 

[physics noob]

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

 

[physics noob]

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
A must = C
A being B field frequency and C being E field frequency

 

[OlderDan]

when i try to find frequency of E field, i would get that it has the same frequency of B field

Why does this trouble you? Why would they not have the same frequency?

http://hyperphysics.phy-astr.gsu.edu/hbase/waves/emwavecon.html

 

[physics noob]

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