Recent content by D__grant

Err..really? The image from the mirror was -6.67 cm --> A result of (1/10cm)+1/di=-(1/20) This must mean it is 6.7cm to the right of the mirror, and 11.3 cm to the left of the lens. Taking 11.3cm as our lens' new object distance do, (1/11.3cm)+(1/di)=(1/6) 1/di=.08cm -> di= 12.8cm and...

Thank you very much, TSny. That is a fantastic thing to know that I'm sure I will find helpful for times to come. Thank you very, very much for this. Happy Holidays Ps Is the answer 13cm to the right of the lens?

For part (a) I found the image distance di to be 24 cm to the right of the lens. (b) Image produced by mirror alone: 1/do + 1/di= 1/f -> (-1/10cm) + 1/di)=(-1/20cm) ----> di= + 20 cm or 2cm to the right of the lens Taking the mirror's image +2cm=do2 1/di=1/6-1/2cm -> di= -3.03 so...

May someone please take a stab at this!? My final's tomorrow! Gahhhhhhhaskldfjasd;f

Homework Statement A convex mirror with a focal length of -20 cm is 18 cm from a convex lens whose focal length is 6.0 cm. An object is located between them, 10 cm from the mirror and 8.0 cm from the lens. The object will produce two images, one from the light which just goes through the...

No, I know each electron can be measured either spin up or spin down, I'm asking what this Z-apparatus does to an electron with this quantum state

Is this question really that straight forward? Even though you're given an electron in Sz, and then put it through a magnetic field in the Z-direction, makes no difference? I'm sorry I just thought that the Z-apparatus would only allow either spin up or spin down electrons based on their...

An electron has an amplitude of 0.8 for Sz = +hbar/2 and an amplitude of 0.6 for Sz ==-hbar/2. - What is the probability that if we send it into a Stern-Gerlach device with its magnetic field in the z direction, it will emerge in the Sz = +hbar/2 beam? -If it does emerge in Sz = +hbar/2...

This is a conceptual question that has to do with SG devices: You're given amplitudes for an electron for Sz. What will happen if that same electron is passed through a Z-apparatus? And then one in the x-direction? From my understanding the electron then has equal probabilities of spin up...

Charge of an electron in joules? I noticed somewhere in my notes he used the mass of an electron in eV. -- I am just completely unsure as to whether this is "the way to do it." Thank you though, Bruce

1. Homework Statement -This is a problem on my practice final that I haven't been able to solve. Hoping someone out there can take a crack & clarify it for me. Quantum wells are devices which can be used to trap electrons in semiconductors. If the electron is in the well it has a lower...

Anyone care to take a shot at this? I'm desperate for help & I'm not sure why no one's attempted it. I read the stickies & tried following the forum's conventions as best I could... thank you all

Homework Statement -This is a problem on my practice final that I haven't been able to solve. Hoping someone out there can take a crack & clarify it for me. Quantum wells are devices which can be used to trap electrons in semiconductors. If the electron is in the well it has a lower...