Homework Statement
Estimate the kinetic energy of a constituent quark of mass 300 MeV/c^2 confined insdide a proton of radius 1 fm
Homework Equations
Heisenberg's uncertainty principle \Delta x \Delta p \approx \hbar (1)
Kinetic energy T=\frac{p^2}{2m} (2)
The Attempt at a...
Homework Statement
A long bar magnet is bent into the form of a closed ring. If the intensity of magnetisation is M, and ignoring any end effects due to the join, find the magnetic field H and the induction B:
(a) Inside the material of the magnet
(b) just outside
Homework Equations...
Homework Statement
A stone is tied to a string of length l. Someone whirls the stone in a vertical circle. Assume that the energy of the stone remains constant as it moves around the circle. Calculate the minimum speed that the stone must have at the bottom of the circle, if the string is to...
Ah cool, I did spot that I got the right number when I was working it out, but wasnt sure why - turns out I'd completely forgotten that I can choose where the potential is zero. Thanks :)
Homework Statement
A bowling ball is rolling without slipping up an inclined plane. As it passes a point O it has a speed of 2.00 m/s up the plane. It reaches a vertical height h above O before momentarily stopping and rolling back down. Determine the value of h. The moment of inertia of a...
Hi all,
Got a bit of a problem with a lab experiment at uni (I'm not sure if this is the right place to post this, mods feel free to move it if necessary!)
Anyway: We're trying to get a plot of efficiency against energy for a planar germanium detector. We've got spectra for different...
Hi there,
Having a bit of trouble working something out for a lab experiment at uni - not sure if this really counts as a 'homework' question - but if it does, moderators, feel free to move it there!
So we've got linearly polarised laser light hitting a quarter waveplate to create...