Recent content by mafra

Homework Statement Show that the current in the middle is zero if all the resistors are equal The Attempt at a Solution KVL for left and right: V - R*i1 - R*i2 = 0 V - R*i3 - R*i4 = 0 i1 + i2 = i3 + i4 KCL: i1 + i3 = i2 + i4 i1 + iG = i2 i3 = iG + i4 I must prove that...

Do you people know any decent and simple (no fancy math) material for the atomic physics around diamagnetism, paramagnetism and ferromagnetism? Topics like wave-particle duality, energy levels, solids, why metals are conductors, relation between magnetic moment and effective mass of...

Thanks mate! That's simpler than I thought. So problably he was referring to an analytical solution for T(t)

A problem from a heat transfer book with conduction and radiation led me to a differential equation like this: T'(t) = a - b*T(t) - c*T(t)^4 Although my professor said that there wouldn't be an analytical solution for this one and to get the answer by an iterative method I got curious and...

I don't get how it is possible to separate the integrals in "exchanging the order of integration"

Homework Statement Let y(t) be the convolution of x(t) with h(t), show that the area under y(t) is the product of the areas under x(t) and h(t) Homework Equations Convolution definition The Attempt at a Solution I found a derivation but it skips a step, uploaded it here: htt...

thank you, people that answered my question

okay, so it is saying that, higher the speed of the particles, higher the temperature (or in the other way, idk) so if it is impossible to particles to reach the speed of light, it is impossible to temperatures get beyond some another value (c².Mm/3.R), or you can't apply this relation to...

If the aleatory speed of a gas rises with pressure and temperature and there is not an apparent limit for these two, what prevents the particles to reach the speed of light? thank you