una lamina se coloca en el borde de una mesa y se determina que realiza 4 oscilaciones en 2 segundos. Por lo tanto, si el sonido que produce la lamina tiene una velocidad de 340[m/s], entonces su longitud de onda es de

When you turn on a battery-operated device, an electrical circuit is

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?

Gasoline comes from petroleum, which is made from ancient living things. petroleum, therefore, contains a type of energy. a. heat b. nuclear c. biological d. chemical potential