The differential equation onamor gave you is a generalized expression using Newton's 2nd Law. The "c" term is the damping coefficient. Depending on how big that coefficient is, the position function could be either an exponential decay ("overdamped" or "critically damped") or it could be the...
well, all you really need to do is think about phase difference. What would the phase difference be in order to produce minimum intensity? If you know that, then you can work backwards to find the required frequency, in a similar manner to how you used a given frequency to find phase difference...
a) Glass has a thermal conductivity which is about 50 times that of air.
b) When you have a larger volume of air there is more room for the air to circulate.
I'll leave it to you to explain what this implies.
This sounds like a classic problem in differential equations. Like you said, the rate of water flow out the bottom depends on height, and the height depends on the overall water flow which is a combination of the drain and the continuous supply. So write a differential equation that includes...
Homework Statement
I am doing some research for a lesson pertaining to the fluorescence of chlorophyll.
When chlorophyll has been extracted from plant leaves using acetone, the solution will glow a bright red when exposed to UV light.
My question is: what is the physical cause for...
You are correct: sub-atomic particles are those which are smaller than an atom. Some of them belong to a family called "baryons," of which the neutron and the proton are 2 of many examples. They are called this because they're made of 3 "quarks" rather than 2 (those are called "mesons")...
I would say so. At x = 0 that wave function gives Y position as a function of time, so its time derivative would be the rate of change of the Y position.
You did the RHR correctly, but in between the wires the clockwise direction from the first wire gives you a field that points into the page on the right side of it (i.e. in between the wires) and the same is true for the second wire.
I'm responding because no one has yet, even though I'm not exactly sure I did it right. I did a naive calculation and got an answer close to one of the choices, but again I'm not sure if I did it correctly.
No, using the RHR you should find that between the wires the fields actually add together and their direction points into the page. At points P1 and P2 the fields are in opposite directions and therefore subtract.
This is why the power supply wires inside a computer are twisted together...
http://en.wikipedia.org/wiki/Wave_equation
http://mathworld.wolfram.com/WaveEquation.html
Looking at these pages, you can see that the second partial derivative of the wave function with respect to time is equal to the square of the speed multiplied by the second partial derivative of the...
The equation you cite is for the magnetic field due to a long straight wire
\vec{B} = \frac{\mu I}{2 \pi R}
and as you state, the total magnetic field is the vector sum of the two individual fields.
The fact that the currents move in opposite directions will change the direction of the...