In order to determine speed, you must know

Which notation is used to represent an alpha particle? a. b. c. d.

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?

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.