A guitar string is 0.620 m long, and oscillates at 234 Hz. If a player
uses his finger to shorten the string
to 0.480 m, what is the new
frequency? (Hint: Find v.)

Ahypothetical metal has an orthorhombic unit cell for which the a, b, and c lattice parameters are 0.413 nm, 0.665 nm, and 0.876 nm, respectively. (a) if there are 8 atoms per unit cell and the atomic packing factor is 0.536, determine the atomic radius (in nm). (b) if the density is 3.99 g/cm3, calculate the metal's atomic weight (in g/mol).