Quick Angular frequency question

AI Thread Summary
To find the angular frequency (w) of an electromagnetic wave from the wave equation Esin(kx-wt), the relationship w = v/k can be used, where v is the speed of light. Given that the speed of light is a constant, substituting it into the equation allows for the calculation of w without needing to find the period (T). The approach of solving for w using the speed equation is confirmed to be correct. Thus, the angular frequency can be determined directly from the wave's wave number (k) and the speed of light.
sarahaha288
Messages
17
Reaction score
0

Homework Statement



I am trying to find the angular frequency of an electromagnetic wave given a general wave equation in standard form
Esin(kx-wt)
I am given the variable k, and i need to find the angular frequency w. I am not sure how to do this without finding the period, which i can't find without angular velocity.

Homework Equations



w=1/T

The Attempt at a Solution


I tried solving the speed equation v=w/k for w and using the speed of light for the speed, but I'm not sure if that is right...
 
Physics news on Phys.org
Your attempt at a solution is correct.
 
Alright, thanks so much!
 
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 »
Thread 'A cylinder connected to a hanged mass'

Thread 'A cylinder connected to a hanged mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

Sum of oscillating frequency and angular velocity
Replies
11
Views
2K
Determine the angular frequency of the system in SHM
Replies
8
Views
5K
How Do You Calculate the Natural Angular Frequency of a Dual-Spring System?
Replies
5
Views
3K
Derive angular frequency for mass spring system
Replies
14
Views
2K
Relationship between spectral distribution and Compton scattering
Replies
13
Views
2K
Given the frequency and wavespeed, find k
Replies
7
Views
2K
Determining $L_{o}$: Finding Angular Momentum of System
Replies
45
Views
4K
Angular frequency of the small oscillations of a pendulum
Replies
3
Views
2K
Turnable Angular Frequency, Torque,Inertia
Replies
5
Views
2K
How Does a Spring Impact the Angular Frequency of a Pendulum?
Replies
15
Views
5K

Hot Threads

Recent Insights

Back
Top