Which statement describes an atomic nucleus? O An atomic nucleus is negatively charged,
O An atomic nucleus has no electrical charge,
An atomic nucleus consists of mostly empty space,
O An atomic nucleus contains most of the atom's mass,

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.