Homework Statement
The sphere has radius R, and uniform volume charge density P. This sphere remains stationary (levitates) when placed above an infinite sheet of paper with a uniform surface charge density u. What is this sphere's mass? Homework Equations
4/3 pi R^3 is the volume of a sphere...
The sphere has radius R, and uniform volume charge density P. This sphere remains stationary (levitates) when placed above an infinite sheet of paper with a uniform surface charge density u. What is this sphere's mass?
Homework Statement
does the following series converge or diverge? how does one determine whether it diverges or converges?Homework Equations
Ʃ (n+1)/((n^3)+3n^2+5)^1/2
n=1, to infinityThe Attempt at a Solution
I attempted to compare it with n/(n)^3/2, this series diverges and is greater than...
I've just been introduced to special relativity and time dilation. I understand that if someone in a frame of reference X bounces a beam of light vertically within two parallel mirrors, I, in a frame of reference Y moving at a uniform velocity 'U' from X, will see the light beam moving across a...