What happens to the angle of reflection as the angles of incidence increases? (PLEASE ANSWER IF YOU KNOW THE RIGHT ANSWERS!!)

Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?

What would be the strength of earth's gravitational field at a point where an 80.0 kg astronaut would experience a 80% reduction in weight

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).