How many cycles/vibrations are there in 1 wavelength?

Determine el momento angular de un rueda de 3000g moviendose a 10m/s con un radio de giro de 400cm

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?

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island