1. Homework Statement
There is a joint system of rods and masses.We need to set up Lagrangian.
2. Homework Equations
L= T-V , T = Kinetic energy , V = Potential energy
3. The Attempt at a Solution
Hey what should we take as the zero of potential. So does the Lagrangian depend...
OK if we are given the following first order rxn:
2N_2O_5 - > 4NO_2 + O_2
The rate constant is k. Now how would we express the rate law for the decomposition of N_2O_5.
- d[N_2O_5]/dt = k[N_2O_5]
OR
- d[N_2O_5]/dt = 2k[N_2O_5]
I think it is the latter but I see all books use...
I had been reading Feynmann lectures , and in it he has shown an argument which proves that E field inside an empty cavity of a conductor is zero.OK. Now he says a similar argument can be used to show that if there is some charge in a cavity of a conductor than the field outside must be zero...
Actually, there are so many equilibria in this solution I cant figure out what will contribute and the assumption I made(given above) seems to give a wrong answer.
1. Homework Statement
A single electron with de Broglie wavelength \lambda passes through a slit of width d = 2\lambda. The electron can then strike a flourescent screen. What will be observed on the screen?
a) A diffraction pattern
b) A single flash has if the electron had moved in a...
To notice patterns you need very thin slits, if you have thick slits you wont be able to notice any change since construction destruction all occur so close together.
When we say heat released in a circuit is i^2 RT , who/what is the cause of this energy loss; is it the battery mechanism? Since work done on charge in the circuit by E field is zero, the only other force seems to be the battery mechanism, right? But in text books there is so much implication...
Suppose we have lots of forces F1,F2,F3 etc acting at a point. Then pressure would be the magnitude of vector sum divided by area , limit of area tending to zero or just sum of magnitude of individual forces divided by area, limit of area tending to zero.
Also if we are given a surface and...
1. Homework Statement
A standing wave is maintained in a homogenous string of cross-sectional area a and density \rho . It is formed by the superposition of two waves travelling in opposite directions given by the equations
y1 = Asin(wt-kx)
y2 = 2Asin(wt +kx)
Find the total mechanical energy...
1. Homework Statement
Statement 1: Average value of AC over a complete cycle is always zero.
Statement 2: Average value of AC is always defined over half cycle.
We need to tell whether these two statements are right, and if 1 is right then whether 2 is its explanation.
2. Homework...
I kinda remember some identity which goes as follows:
If a,b,c are coplanar, non collinear vectors then
\alpha a + \beta b + \gamma c = 0
=> \alpha + \beta + \gamma = 0
or something like this. Can someone help me remember.
Re: Streamlined
That was very nice reply Stovebolt.Thank You.
A) Streamlines don't intersect but does that mean they don't interact energetically?
B)I think they can speed up or slow down because if we take a crossection of the vessel then the volume of fluid it contains must pass through...
Which of the following is true in a streamlined flow of incompressible viscous liquid?
A) When a fluid is in streamlined flow then there is transport of energy from one layer to another.
B) The speed of flow at all points in space is necessarily same.
C) The velocity of the liquid in contact...
Re: electrostatics
Sanjoser: I have a seemingly related query here with no proper response https://www.physicsforums.com/showthread.php?p=1977299#post1977299
In an inductor capacitor circuit , what is the kind of E field driving the current? Conservative or non-conservative? And I really dont understand what is the correct way to setup the differential equation for it. This is why:
In high school level text books(Resnick Walker), they have applied...
Re: Capacitor
@hootenanny : But isnt the E field of the capacitor confined only to the region in between the plates.
@Pumblechook: Yes but I actually wanted the reason to be in the lines of what hootenanny said.
Thnx for replies. Awaiting more.
Why doesnt electric current flow in a circuit when a capacitor is fully charged?
I mean there is still the battery making the E field, why is it unable to move the electrons of the wire of the circuit?