3 Determine o valor de x para que o par ordenado (x, 23) seja uma das soluções da
equação 5x – 2y = - 4. Explique como
você chegou a esse valor.​

The speed of light in a material is 0.50 c. what is the critical angle of a light ray at the interface between the material and a vacuum?

Amichelson interferometer operating at a 600 nm wavelength has a 3.02-cm-long glass cell in one arm. to begin, the air is pumped out of the cell and mirror m2 is adjusted to produce a bright spot at the center of the interference pattern. then a valve is opened and air is slowly admitted into the cell. the index of refraction of air at 1.00 atm pressure is 1.00028.how many bright-dark-bright fringe shifts are observed as the cell fills with air?

Ain is , is 's of ? 0.62 0.79 1.27 1.50