The lattice constant of a simple cubic lattice is do. (a) sketch the following planes: (i) (110), (ii) (111), (iii) (220), and (iv) (321). (b) sketch the following directions: (i) [110], (ii) [111], (iii) [220], and (iv) [321].

Identify the correct relation showing that the radius r of the orbit of a moon of a given planet can be determined from the radius r of the planet, the acceleration of gravity at the surface of the planet, and the time τ required by the moon to complete one full revolution about the planet. determine the acceleration of gravity at the surface of the planet jupiter knowing that r = 71 492 km and that t= 3.551 days and r= 670.9 × 10^3 km for its moon europa.