(b) A person standing in a lift holds a spring balance with a
load of 5 kg suspended from
it. What would be the reading
of the balance when the lift is
descending with an acceleration
of 3.8ms??

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).