Recent content by TheTourist

I think I have been misunderstanding the physical meaning of the displacement current. You have helped me to think about it in the correct way, thank you Matterwave. The displacement current should be equal to the current in the wire in this case, i.e. amperes law gives the same result inside...

Homework Statement The current I=I0exp(-t) is flowing into a capacitor with circular parallel plates of radius a. The electric field is uniform in space and parallel to the plates. i) Calculate the displacement current ID through a circular loop with radius r>a from the axis of the system...

One mole of an ideal gas undergoes an isobaric expansion to reach thermal equilibrium with a surrounding heat bath. In doing so, it expands by a factor of two in volume. The internal energy of the gas is described by, U=3/2RT. Calculate the resulting change in entropy of the gas, the heat bath...

I reacted a solution of manganese (II) chloride with sodium hydroxide, however I am unsure of the reaction. Do the hydroxide ions displace the chloride ions or take a hydrogen from the water in the complex? Also after that reaction i added a few drops of hyrdogen peroxide, which caused a...

I have derived the following equation for the velocity of a collapsing shell of a collapsing star. \frac{dr}{dt}=-[GM(\frac{1}{2}-\frac{1}{R})]1/2 I now need to integrate this to find the free-fall time, and the hint is to manipulate the equation into a form where you can use a standard...

Interference with two speakers??! Two speakers placed 1m apart emit sound of frequency f=1000Hz in phase. A listener walks along a line that is parallel to the line joining the two speakers and 8m from their midpoint. What is the distance he has to walk from the central maximum in loudness to...

An interstellar gas cloud can be roughly described as spherical with a uniform density. Its radius is R and its total mass M. By considering the gravitational potential energy of a thin spherical shell, show that the total potential energy of the cloud is given by...

A transverse traveling wave is described by y(x,t)=0.6e2x-5tcos(5t-2x) for x and y measured in cm and t in s a) Show that y(x,t) satisfies the one-dimensional wave equation, and use this to deduce the wave speed. What is the direction of propagation? b)USe the work from part (a) to show...

I have several electronic spectra for different cobalt complexes which I need to analyse. I am fine with finding \lambdamax and the molar absorption coefficient etc. However it also asks me to mark absorption bands on the printout and tabulate \lambdamax values and absorbance values for these...

A transverse traveling wave is described by y(x,t) = 0.6exp(2x-5t)cos(5t-2x) for x and y measured in centimeters and t in seconds. Show that y(x,t) satisfies the one-dimensional wave equation. I think that I have to show that y(x,t)=f(x+/-vt) where f is a funtion of x and t. Am I...

Two simple pendulums with the same length L but different masses, m1 and m2=2*m1, are set swinging at the same time with the same initial amplitude. Both pendulums are damped by the same force, Fdamp=-\gammas(dot). Eventually, the amplitude of the lighter pendulum decreases to half its initial...

I think I may have it now... I used the formula to find gamma factor 1/(1-v^2/C^2)^1/2 and got a gamma factor of two, and assuming that the original length is 1, the observed length is 1/2. (Using Lorentz contraction)

Thats great thanks, got the exam this morning so that was some good advice!

An explosive charge breaks up an asteroid into two pieces, of 2x1012kg and 3x1012kg respectively. If the first alters course by 2ms-1, by how much does the second alter course? I really don't know where to start on this. It must be about conservation of momentum, but i don't get how to do...