X-ray powder photograph of cubic material is taken. in the photographs line are (b) observed at angles 19.25° 22.38° , 32.58° 39.15°, 41.26° 49.50° 56.08° and 58.360 determine the lattice constant and the type of cubic material.

Greg drew a diagram to compare two of the fundamental forces. which labels belong in the areas marked x, y and z? gravitational force electromagnetic force x. attractive y repulsive z: infinite range x: infinite range y attractive z. repulsive x. always attractive y: infinite range z: attractive or repulsive x. attractive or repulsive y infinite range z: always attractive