A particle of mass 1.0~\text{g}1.0 g moving with velocity v_1 = (3.0~\text{m/s})~\hat{i}- (2.0~\text{m/s})~\hat{j}v 1 =(3.0 m/s) i ^ −(2.0 m/s) j ^ experiences a perfectly inelastic collision with another particle of mass 2.0~\text{g}2.0 g and velocity v_2 = (4.0~\text{m/s})~\hat{j}- (6.0~\text{m/s})~\hat{k}v 2 =(4.0 m/s) j ^ −(6.0 m/s) k ^ . Find the magnitude of the velocity of the formed particle.

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.