/sci/ - Science & Math

>>5592024
lets say you have an hermitian operator, lets call it A to be generic.

A and H do not commute. in fact, [A,H] = i(hbar)

prove that the expectation value of p^2/(2m) can have negative values for these circumstances.

>>5591879
assume V = 0
and actually, I was wrong, so are you.
this would allow for negative energy.
which you can show because H = p^2/(2m) and an hermitian operator commuted with it give i(hbar) so for some reason (for which I have no fucking clue) it actually works out to have negative allowable energies.

idk, all I know is I don't know as much as my professor and he just posted the answers online.

>>5591868
lol faggot know-it-all.
>>>/b/

>>5591866
I'm pretty sure the answer is no.
the issue is proving it. it's bloody difficult, and I have no idea.

interesting problem I pose to you fine gentlemen.

lets say you have an hermitian operator, lets call it A to be generic.

A and H do not commute. in fact, [A,H] = i(hbar)

can the expectation value of the kinetic energy be negative under these circumstances?

>mfw I originally read this problem

Son 1: 7
Son 2: 3
Son 3: 3

Guessing without using google. Now I will check google.

>The product of their ages is the number that house across the street.

Broken Chingrish

climb a tree


then hang yourself

OP here, never mind I figured it out

>>1042967
does it even take any effort?

>>1042947
possible. It didnt take very long for it to appear after the conditions were right on Earth. Don't see why we would be the single anomaly in the entire universe.

probably wont be, no one is asking anything interesting it seems

oh, here you go then

>>1042879
evolution is inevitable for a reproducing population with finite resources and copy errors in reproduction.

>>1042857
I love it. Wish I were better at it, but its very rewarding at the end of the day to just learn something new.

>>1042836
depends if you like doing research, I suppose. If you do, its fantastic. If you dont, it will drive you mad

how about we figure out the signaling for female arousal and produce it in aerosol form.

>>1042803
they are too divergent. A lot of other animals readily form interspecies. Mammals tend not to as much.

>>1042778
I enjoy grad school so much more. There is a lot more stress from your research, and a lot less stress of juggling 4-5 classes.

>>1042763
it was a speciation event from the chimp version. Multiple origins, I believe.

>>1042740
white x asian F1 females are very pretty.

>>1042757
ya

>>1042759
wrong number of chromosomes for it to happen naturally. Maybe in the future? Some people will be very upset. Mainly the religious.

>>1042741
"all the time" = repeatability of this phenomenon has occurred multiple times in lab conditions.

>>1042717
yes, there are hybrids all the time. There is some debate that dogs/wolves are really the same species.

But that's just an argument over what a species is.

>>1042717
let me answer your question by asking you this.

can a wolf breed with a man?