Considere un resistor con longitud L, sección transversal a uniforme, y resistividad R UNIFORME, que conduce una corriente con densidad uniforme j. use la ecuación (=_ =^ =^/) Para calcular la energía eléctrica disipada por unidad de volumen, .Exprese el resultado en términos de a) E Y J; B)J Y ; C) E Y

Темирказык жулдызынын жулдыздык шамасы 2,02, ал веганын жулдыздык шамасы 0,03. осылардын кайсысы жарык жане неше есе жарык?

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?

Is the vertical component of velocity ever zero?