Homework Statement
We are asked to show that:
## \frac{d^2x_\mu}{d\tau^2}= \frac{1}{2} \frac{dx^\nu}{d\tau} \frac{dx^{\rho}}{d\tau} \frac{\partial g_{\rho \nu}}{\partial x^{\mu}} ##
( please ignore the image in this section i cannot remove it for some reason )
Homework Equations
The...
Homework Statement
I am stuck on the second paragraph but I thought I would add the first paragraph in case some context would help!
Homework Equations
|A> = cos(theta)|H> + sin(theta)|V>
The Attempt at a Solution
I am not wholly comfortable with bra-ket notation with the outer product
p =...
Homework Statement
I'm fine with the first part. Part b) is causing me trouble
http://imgur.com/xA9CG5G
Homework EquationsThe Attempt at a Solution
I tried subbing in the solution y1 into the given equation, but I'm not sure how to differentiate this, i thought of using integration by parts...
yes i definitely do agree, i did realize that if its at a point x then a further distance of x on the other side will cancel that E field, however I'm not sure how to go around formulating that properly mathematically properly
no i didn't. So if i try and consider this, does is go like this ? the E field going from the positive plate will be -V/2d + px/e and through the left that should give -V/2d -p(d-x)/e and adding those two would give -V/d + pd/e ?
Homework Statement
2 large plates are separated by a distance d and a space charge of uniform charge density p is placed between them and a potential difference V is applied across the plates. Find the electric field stength at a distance x fromt the positive plate
The answer is -V/d...
a satellite is in circular orbit around the sun. which requires a greater change in speed: the satellite to fall to the sun or to escape the solar system
Homework Equations
f = gmm/r^2
The Attempt at a Solution
Calculated the escape velocity as(2 GM/R)^0.5
how do i find the speed required so...
Homework Statement
In the earliest circular planetary model of the atom the electron and proton orbited a common centre. The electrostatic forces alone provided the force field. However an accelerating charged body will send out electromagnetic waves and the orbiting charges would consequently...