Homework Statement
My textbook says that W = i/2Δ(pV) for an adiabatic process. I don't understand :S
Homework Equations
W=∫pdV
The Attempt at a Solution
So you mean the end of the ellipse closer to the other focii?
Also I posted this here because it was in the context of elliptical orbits but now i realize it is more of a math question ;)
hi Yukoel,
no, i don't seek a mathematical proof. i just want to understand the statement. I still don't really understand... what do you mean by it "states constraint of the tangency condition"?
thanks for your help!
What does it mean when one says that "A circle and an ellipse with a focus at the circle’s
center can touch each other only at the longer axis"?
Can't you, by varying the size of the circle, make it intersect the ellipse in a variety of ways?
Thanks! :)
The phase of a wave at (x,t) is a0cosϕ = ℜa0eiϕ.
Where did this come from? I know that the phase of a wave is given by ϕ = kx−ωt+ϕ0 but then I am stuck.
Please help! Thanks :D
Okay En=n2∏2ħ2/(2mL2)
Problems
1. Do we just set n = 1 since when know the particle is near the ground?
2. The equation is derived for when potential energy is zero (when kinetic and potential energy are equal). Is En going to be E in our case? So we get the equation below?*
3. We don't know L...
Sorry but I have thought about it really hard and I really can't come up with anything.
If the electron is happy at the bottom, why would it have any momentum?
If the electron is at the bottom, it has no potential energy... How can we know the kinetic energy K (it's not given)?
p = sqrt (2mK)...
but doesn't the air column above push on the surface of the water which pushes on the bottom?
also, say submerging an object makes the water height h0. Is the pressure at the bottom with submerged object higher, lower or the same as the pressure at the bottom of a water column at height h0 (no...
Thanks Steely Dan! I don't know how the uncertainly principle can help here...could you please explain? As for the wave function, does this mean I have to use Schrodinger's equation?
Do I have to use both the uncertainly principle and Schrodinger's or just one or the other?
Homework Statement
An object suspended in water is lifted out of the water. How does the absolute pressure at the bottom of the water change?
Homework Equations
The Attempt at a Solution
Wouldn't the absolute pressure not change if the object is still directly over the water...
An electron is enclosed in a large rectangular box. Considering gravity, estimate the order of magnitude of the thickness of the layer that is occupied by the electron at the bottom of the box.
I thought about this for a long time and I really have no idea how to proceed. Any thoughts?