A circuit with a transformer is shown in Figure (a) Determine the turns ratio, nnn. (b) Determine the value of RabR_{\mathrm{ab}}Rab. (c) Determine the current, iii, supplied by the voltage source.
Bismuth(V) compounds are such powerful oxidizing agents that they have not been prepared in pure form. How is this fact consistent with the location of Bi in the periodic table?
ZnS\mathrm{ZnS}ZnS has the zinc blende structure. If the density is 3.02 g/cm33.02 \mathrm{~g} / \mathrm{cm}^33.02 g/cm3 and the lattice parameter is 0.59583 nm0.59583 \mathrm{~nm}0.59583 nm, Find the number of Schottky defects. (a) per unit cell; and (b) per cubic centimetre.
Use the Bohr model of the hydrogen atom to explain the emission spectrum of hydrogen.