EM Wave direction and frequency

AI Thread Summary
The discussion centers on electromagnetic (EM) waves traveling west, with a magnetic field oscillating vertically at a frequency of 80,000 Hz and an RMS strength of 6.75e-9 T. The participants confirm that the electric field oscillates horizontally and its RMS strength can be calculated using the formula E = cB, resulting in an electric field strength of 2 V/m. The frequency of the electric field is the same as that of the magnetic field, which is a key point clarified during the discussion. The wavelength is determined using the relationship between frequency and velocity, leading to a wavelength of 3750 m. Overall, the participants successfully resolve the queries regarding the properties of the EM wave.
physics noob
Messages
41
Reaction score
0
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!
 
Physics news on Phys.org
physics noob said:
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)
 
thanks for your help, i got it now, forgot that c=V thanks again
 
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
 
...i GUESS i can live with it...lol...thanks guys
 
Thread 'Collision of a bullet on a rod-string system: query'

Thread 'Collision of a bullet on a rod-string system: query'

In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
View full post »

Similar threads

Understanding EM Wave Reflection: Wavelength Changes Explained
Replies
1
Views
1K
What is the peak strength of the Electric Field
Replies
1
Views
2K
Electromagnetic Waves Questions
Replies
4
Views
6K
Critical frequency of Faraday Waves?
Replies
6
Views
1K
Direction of travel of a plane wave given direction of electric field
Replies
8
Views
1K
Resultant Frequency and Wavelength of Interfering Sound Waves
Replies
5
Views
2K
Problem about electromagnetic waves -- Writing equations for B(t) and E(t)
Replies
2
Views
1K
Multiple-Choice Questions on the Behaviour of Waves and Light 😁
Replies
5
Views
2K
Area Under Frequency versus Time Curve meaning?
Replies
8
Views
2K
Producing EM waves in laboratory
Replies
2
Views
964

Hot Threads

Recent Insights

Back
Top