Aboy throws a pebble into the center of the pond. a floating leaf near the waters edge oscillates ( moves up and down ) two complete cycles in one second as water waves move past the leaf. the waters wavelength is 10 meters. what is the waves velocity?

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).