Recent content by carloz

Okay So EA=q/ε E=q/(εA) A=2πrL dA=2πLdr dE=q/(ε2πLdr) E = ∫(limits a and b) q/(ε2πLdr) = q/(ε2πL) ∫(limits a and b) 1/dr Am I on the right track? If so, how to evaluate ∫(1/dr) ? Thank you.

yes. but that only works when the uncertainties in a and b are independent. however in my equation for M, a appears twice. since the error of a is not independent of a, how do i go about finding the uncertainty? thanks.

Homework Statement M = (a-b)/2 + a a = 15 b=5 What is the uncertainty in M if the uncertainty in a and b is ±0.7? Homework Equations for c = a + b Error in c =√[(error in a)^2 + (error in b)^2] The Attempt at a Solution Error in M = √[0.7^2 * 3] = 1.2124 The problem...

Homework Statement You have two concentric cylinders. The inner cylinder has radius a and the external cylinder has radius b. Find the electric potential in the region between the cylinders. [Hint: The final equation takes the form V(r) = constant1 - constant2 ln(something) ]...