# Search results

1. ### Magnitude and direction of k vector

Thanks for the guidance.
2. ### Magnitude and direction of k vector

Shouldn't direction be unit vector like The vector you mentioned divided by |k|?
3. ### Magnitude and direction of k vector

To be honest this is all so maths. Thanks for this. What does 78540 signify. I mean so much radians / cm.
4. ### Magnitude and direction of k vector

I didnt understand the question. The magnitude is 2(pie)/wavelength. I get 78500 rad/cm which is pretty wrong as guess. Where would angle come into picture? Ref: https://www.millersville.edu/physics/experiments/062/index.php Shouldn't direction be like i + j + k ? So will it be like: |k|cos30...
5. ### Charges inside a metal sphere will tend to go towards

Oh ... another wrong answer i gave at the exam. it's a disaster.:frown: Thanks for the reply.
6. ### Charges inside a metal sphere will tend to go towards

Homework Statement A metallic sphere is charged. Where will the charges go? At center or on surface or uniformly distributed. Homework Equations I think it should be uniformly distributed. Cause that's why we have terms like volume charge density like we do q/volume. The Attempt at a Solution...