Is there an experiment that can measure the energy of a single particle so immediately after it has collapsed to one of the energy eigenfunctions?
The problem is that all experiments i can think of are about measuring the position of a the particle so we collapse it to its delta function...
the spring is not vertical but horizontal and my hand stretching the spring does not move..
What dauto said how does the spring know the difference between a still hand and the wall is true, meaning it shouldn't know... Although if you do the experiment for example with a rubber band of a...
The spring density is again bigger at the wall even if i flip it around.
The spring has the same density when it is not stretched and it doesn't matter which side i stick to the wall..
Suppose you take a steel spring of given length and number of coils/unit length.
The linear mass density of the spring is the number of coils per unit length.
Now if you stretch the spring then the number of coils per Δχ is not the same everywhere in the spring. (There are more coils per...
Here is the following excersise one teacher posed as a challenge to solve:
A spring has one side attached to the wall and the other one free.The spring has at rest
length L, and linear mass density ρ(x)= constant. Suppose we pull the spring to a new length L'.
1)Find the new mass density of...
I have the following question for anyone who can help:
Suppose in Dirak notation i have the following state:
/ψ> = 2 /u1> + /u2> where /u1>,/u2> are the two first eigen kets of energy of the infinite square well.
That means <x/u1>= Asin(π x /L) and <x/u1>= Asin(2 π x /L) which gives ...