A cannonball is launched diagonally with an initial speed of 38.0m/s. Label the hypotenuse, opposite side and adjacent side, and determine all unknowns.
initial speed:
m/s
initial horizontal speed:
m/s
initial vertical speed:
m/s
At what angle (0) was the cannonball launched?

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).