# Search results

1. ### Classical Relativity and the Speed of Light

Homework Statement Let's assume that the classical ideas of space and time are correct, so that there could only be one frame, "ether", in which light traveled with same speed in all directions. Assume that the earth's speed relative to the ether frame is our orbital speed around the sun...
2. ### Relativity of Orientation & Origin

Ok, thank you. I remember things better now. ## F_{net} = m*a ## ## F_x = m*g*sin(\theta)## ## F_{\mu} = \mu * F_N## ##F_{net}= F_x- F_{\mu}=m*a## ## a = g(sin(\theta) - \mu(cos(\theta)))## Finally, ## S(t)= (1/2)g(sin(\theta) - \mu(cos(\theta)))* t^2 ##
3. ### Relativity of Orientation & Origin

Homework Statement At time t=0, a block is released from point O on the slope shown in the figure. The block accelerates down the slope, overcoming sliding friction. a.) Choose axes 0xy as shown, and solve the equation ##\Sigma F = m a## into its x and y components. Hence find the block's...
4. ### Zeeman Effect

I like my chart better. Thank you so much for your help TSny!
5. ### Zeeman Effect

I am using this chart: http://image.tutorvista.com/cms/images/44/spectrum.JPG Converting my wavelength to cm shows that it's a radio wave.
6. ### Zeeman Effect

This is a radio wave. Most likely from a radar. Note that for part b.), I am using the energy difference. In this way, I am using energy from part a.) to solve the De Broglie relation.
7. ### Zeeman Effect

a.) Separation of levels ##(4.05- (-4.05))* 10^{-5} eV = 8.10 * 10^{-5} eV## b.) ## \lambda= 15308 * \mu m##
8. ### Zeeman Effect

Ok. So, I guess that to excite an atom to an upper level we need ## E_{\gamma}= + 4.053 10^{-5} eV= \dfrac{hc}{\lambda}## Solving for λ: ## \lambda =\dfrac{hc}{4.053 10^{-5} eV} = \dfrac {1.24 10^{-6} eV m} {4.053 10^{-5} eV}= .0305946213m = 30 594 621.3 nm## What is wrong with this?
9. ### Zeeman Effect

Ok, so I have an update on the theory. I misinterpreted it. Normal Zeeman effect doesn't take into account spin up or down of electrons. So, ground state or s-levels have no energies' splittings. Anomalous Zeeman effect shows splitting in s-levels: ## \Delta E= \pm \mu _{B} B ## Separation of...
10. ### Zeeman Effect

Janhaa, I realize that you are talking about some applied spetroscopy properties, but I should be able to use "basic" concepts of Modern Physics to solve this problem. It's an introductory class to Modern Physics.
11. ### Zeeman Effect

I don't know what NMR or g-factor is. Can anyone answer my previous post?
12. ### Zeeman Effect

So, in other words. At the ground state, there is still spin of the electrons, but they don't produce a splitting in the energy due to the magnetic field? Then, a.) would be ΔE= +-1/2 But, +-1/2 what? (1/ λ)= R( (1/1)- (1/4) ) (Lyman series) λ=91nm (UV light) b.) E=h*c/λ...
13. ### Zeeman Effect

Homework Statement • Consider a hydrogen atom in its ground level, placed in a magnetic field of 0.7 T along the z axis. (a) What is the energy difference between the spin-up and spin-down states? (b) An experimenter wants to excite the atom from the lower to the upper state by sending in...
14. ### T( period) Vs. L (length) Interpretation

Homework Statement Now , analyze the data with a power function least square fit. Let the x values be the length and the y value be the period. From the results of the power fit, compare the experimental value of the period to that calculated USING THE POWER FIT YOU JUST DETERMINED...
15. ### Skew Lines Conceptual Problem

What reasons can I give to my answer? I know that it can be done, because it's geometrically possible to picture. But, how do I put it into academic words that can be considered a correct answer? Also, I know how to find a point A and B in L1 and L2. It's just giving an arbitrary value to...
16. ### Param. Lines and Planes

It does help. It's interesting, the vector directions are use as if they were in a plane to find the "normal" vector passing through them.

How?
18. ### Param. Lines and Planes

Could someone help, please? I've been working on it and looking for info on the net, but I have been unsuccessful. Thank you.
19. ### Skew Lines Conceptual Problem

Homework Statement Suppose L1 and L2 are skew lines. Is it possible for a non-zero vector to be perpendicular to both L1 and L2? Give reasons for your answers. Homework Equations I know that skew lines are not parallel or intersect. Also, they don't lie on the same plane. The Attempt...
20. ### Param. Lines and Planes

That's my problem. How do I find the cross product of two parametric equations?
21. ### Param. Lines and Planes

Homework Statement Find the point of intersection of the lines r(t)=< 2t+1, 3t+2, 4t+3> and x=s+2 y=2s+4 z=-4s-1 Then, find the plane determined by these lines. Homework Equations Intersection is when points meet. So, just equating x,y, and z variables will yield the point of...