Recent content by felipeek

@nasu Thanks very much for the answer. Ok, this is a point that I'm not 100% sure. The voltage unit is Volt and a volt is 1J/1C. So, the voltage between two points tells us how many potential energy you will lose/gain by moving one coloumb between these two points. Since the voltage definition...

Hello everyone, Imagine two points that have a Electric Potential Difference of 10V and they are connected through a conductor wire. Let's call these points A and B: Now imagine we have a charge on A of 1C. To move the charge to B, we need to make a work of 10J, right? So, now, imagine the...

Guys, thank you so much for your answers. It really helped me a lot. @SimonBridge: I understood all you have said and it really makes sense. In fact, the density must be a function of a 3D vector, since every volume element dV on the xyz graph has their own density. However, it is still hard...

Is it correct to write this: \rho=\frac{dm}{dv} where \rho is density, dm is a differential of mass and dv a differential of volume? We know that \rho=\frac{m}{v} when m/v is constant. But, if density is not constant, or, in other words, m/v changes, could we express the variation of...