When X-rays of wavelength 0.0630 nm are diffracted by a metallic crystal, the angle of first-order diffraction (n = 1) is measured to be 15.8°. What is the distance (in pm) between the layers of atoms responsible for the diffraction?

Copper has free electrons per cubic meter. a 71.0-cm length of 12-gauge copper wire that is 2.05 mm in diameter carries 4.85 a of current. (a) how much time does it take for an electron to travel the length of the wire? (b) repeat part (a) for 6-gauge copper wire (diameter 4.12 mm) of the same length that carries the same current. (c) generally speaking, how does changing the diameter of a wire that carries a given amount of current affect the drift velocity of the electrons in the wire?

The electronic structure or chlorine is 2.8.7 what is the electronic structure of fluorine?

Most short-period comets do not have randomly oriented orbits because