Recent content by sona1177

Homework Statement An electron is confined to a "quantum wire" of length 150 nm. what is the minimum uncertainty in the electron's momentum component along the length of the wire? What is the minimum uncertainty in the electron's velocity component along the length of the wire? Homework...

OK Supratim so I am going to put True True False True True And hope for the best. thanks for all your help! I appreciate it!

Oh my gosh, I am sorry Supratim! I am not thinking straight. I don't know why I keep messing them up. I mean to say "Thomson's Plum Pudding Model". I know the first is true, the third is false, and the fourth is true. The problematic ones are the second and last one. For example, I thought...

Im sorry, I should have said Rutherford's EXPERIMENT. yes, it calls it the plum-pludding model. that's why I am afraid to say true for "raisins"

Thanks, Supratim! I got this one right. Now onto the other Rutherford one . . .

on "lon-capa". its making me crazy. I am on my last try. my book calls rutherford's experience the plum pudding model. so now i don't know whether to mark the second one true and mark the last false or mark the second one true and mark the last true also :(

I tried Bohr realized that the discrete lines in atomic emission spectra suggested a quantum condition in the atom TRUE Rutherford realized that an atom had a very massive center (nucleus) because he saw that alpha particles penetrated it like empty space FALSE the absorption and emission...

THANKS, SUPRATIM. LET ME TRY AGAIN (I AM SUBMITTING THIS FOR HOMEWORK AND IM ON MY LAST TRY SO IF I GET THIS WRONG, I WILL LOSE ALL THE POINTS, SO I WANT TO DOUBLE CHECK): Which of the following statements are true about the hydrogen atom's energy levels? the ground state (n = 1) energy is...

well i thought he said it was plums in a pudding (plum pudding model), not raisins LOL.

SO IS IT GOING TO BE: Which of the following statements are true about the hydrogen atom's energy levels? the ground state (n = 1) energy is -13.6 eV TRUE the wavelength of a photon emitted from the n=3 to n=2 transition is longer than that emitted for the n=4 to n=3 transition FALSE...

Homework Statement Which of the following statements are true about models of the atom? Bohr realized that the discrete lines in atomic emission spectra suggested a quantum condition in the atom TRUE Rutherford realized that an atom had a very massive center (nucleus) because he saw...

well i found out the last two are true. but its still marking me wrong when i have True false true true true Could the third one be wrong?

Sorry I don't think I am thinking straight here. If En=E1/n^2 where E1=-13.6 eV and n=1,2,3, then wouldn't E always be less than E1, then the fourth statement is true and the last is also true. so I would have: the ground state (n = 1) energy is -13.6 eV TRUE the wavelength of a photon...

would all of them be false except the first one? because if its in the excited state then n>1 and then E >13.6eV? I know the first and second ones are correct for sure :)

Well I know at least one of the answers is wrong because I am getting marked incorrect. Im thinking the third and last one are both false. Because if n>1 then that would be an excited state. is this right? thanks!