Recent content by ciso112

wow, words can hardly express the gratitude I feel towards you guys. Please, have all my likes ...and a video of a gopro camera set on a rocket which flies to space :D

if "l" is the width, then: dR = RO*(dx/PI*r^2) where r = r1 + ((r2-r1)/h)*x ?

I am not sure what "l" is, I think this is tha last think that needs clarification

great, I thank you so much! now all I need is to express dA and then I can turn to mathematics, yes? what about, dA = PI*r^2*dx?

dR = ρ * (r1 + (((r2-r1)/h)*x)/dA) ?

r1 + ((r2-r1)/h)*x could it be?

The concept behind seems to be clear, the second thing is to write it down...what about: ...l (radius of a given element) = r1 + ((r2-r1)/h)*x

am I getting closer? dR = (PI*r^2*dh)/dI where I is electric current

could you clarify this term pls, not even google helped me

hm, this gives me the integral of PI*r^2 with boundries of R2 and R1...?

Homework Statement Homogeneous body with the shape of a truncated rotating cone has a base shaped like a circle. The radius of the lower base is R2 = 8 cm and radius of the upper base is R1 = 4 cm. The height h = 8 cm (see figure). Calculate the total electric resistance between the base...

I really like the logic behind, it recommends me LibreOffice and its writing of the equations. Thx for the guidance, it is clearer now, hope I will do the calculations correctly.

Thx a lot for your reply. Yes...mainly "dx = R.dθ" made the trick, thanks again. (the result is the same :) ) Now everything is ready for the second question: I need to calculate the intensity, I was thinking of using the equation "(vector)E = - grad θ" which gives me the partial derivations...

Homework Statement Very thin wire bent into the shape of a quarter-circle with the radius R is uniformly charged with electric charge q. Calculate the potential and intensity of the electric field at point A, which lies on a line perpendicular to the plane of the semicircle and is passing...