as the sun evolved it contracted, its internal energy changing fro x to y. what's the total energy radiated, assuming luminosity is comparable with present?
I understand that the rate of change of the internal energy = rate at which energy is radiated away by the star.. but i have been...
Okay, thanks for your help!
It seems a bit strange though how this question is kindof a trick question seeing as its asking about 10 electrons. and its worth 6 marks so i don't know how it can be a trick...
Does anyone else know?
Emily.
Energy levels of a particle in cubic box with sides length a are:
E= [(h^2 pi^2)/(2 m a^2)] * (nx^2 + ny^2 + nz^2)
where nx, ny, nz are integers 0.
If 10 electrons are placed in this box, what is the lowest possible total energy of all the electron?
.........
I am finding this...
I don't understand how to calculate force constants of a combination of springs.
for example 2 spings parallel with the mass on one end lying on a table.
or 2 springs attached with mass at one end lying on a table.
i know that force constant = sum of forces/ extension
but just...