Recent content by supermenscher

Yes I know that 0.010 is the uncertainity of the velcoity, but how do I incorporate that into the equation?

A proton is traveling with a speed of (6.550+/- 0.010)e5 m/s. With what maximum accuracy can its position be ascertained. I know that p=mv and x=p/h but what do I do with the +/- 0.010, that is the part that confuses me. How many electrons can be in the n=6, l=4 subshell. I know that l...

For the first one I did f=W/h = 4.1*10^-19J (1/1.6*10^-19J)=2.565ev f=2.565ev/6.626*10^-34=3.86710^33 For the second one, which wavelength do i solve for, wavelength` or wavelength because it says with respect to the incident beam

So is it just f=W/h I did that and got the wrong answer...and can you help me with another problem. X-rays of wavelength 0.120nm are scattered from a carbon block. What is the compton wavelength shift for photons detected at the 45 and 180 degrees relative to the incident bean. I did...

What minimum frequency of light is needed to eject electrons from a metal whose work function is 4.1*10^-19J. I converted the work function to electron volts and I know that hf = KE+W and f=KE+W/h but where to I go from there?

I am having some trouble with this one...any help would be appreciated. A 31.8cm focal length converging lens is 21.6cm behind a diverging lens. Parallell light strikes the diverging lens. After passing through the converging lens, the light is again parallel. What is the focal length of...

thank u doc al

I got the other 2 right, but I still can't get the first one with the mirrors and angle. Thank you for you help so far

Yes, I followed the formulas given and plugged in the numbers

Thanks for your help doc al

Sorry I made a typo, the light ray strikes one mirror at 40 degrees

help on optics problems...please...they are due tonight! Two mirrors meet at an 125 degree angle. If light rays strike one mirror at 125 degrees, what angle do they leave the second mirror? I got 5 degrees and I tried negative 5 degrees, but both of those answers are wrong. A diver shines...

I am, do you have any other help besides submitting in the correct format

It is submitting the answers online

I think I am doing these right, but I keep getting them wrong...can anyone show me what I am doing wrong. 1. What is the wavelength of a 29.00E9 Hz radar signal. I did wavelength = c/f = 3.00E8m/s divided by 29.00 Hz and got 0.01034, but it is telling me that it is wrong. 2. An em...