Addie begins to push a cart down the hallway with a net force of 200 newtons. The cart accelerates uniformly from the rest to a speed of 2 m/sec in 1.2 seconds. what is the mass of the cart?

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).