Recent content by LampMan

Homework Statement prove the following natural numbers n and r. P(n-1,2) + 3P(n+1,2) = 2(2n^2 + 1) and P(n,r) = P(n-3,r-3) The Attempt at a Solution i honestly don't even know what this question is asking. this is a sort of handout of 3 questions our teacher gave us in which we...

Homework Statement A prince trapped in a castle wraps a message around a rock and throws it from the top wall with an initial velocity of 12 m/s [42 deg above the horizontal] the rock lands just on the far side of the castles moat at a level 9.5m below the initial level. determine the rocks...

aha well I've mised 2 of 2 classes on this unit so i can't believe it was that easy now that i see it ahhh well thanks alot

could it possibly be that I am using the wrong equatiom? and should be using E(force intensity) = kq/r^2 instead of coulombs law?? edit: yes i forgot to convert haha good call..but yea the fact that I am finding two charges throws me off...so would just solving for one q give me the charge I am...

Homework Statement two charged spheres 4 cm apart attract each other with a force of 1.2x10^-9 . determin the magnitude of the charge on each if one has twice the charge (of the opposite sign) as the other.Homework Equations Fe = KQq/r^2 The Attempt at a Solution well you are only given Fe...