Which labels belong in the areas marked X, Y, and Z? X: ray bounces off a boundary and maintains constant speed Y: ray changes direction Z: ray passes through a boundary and changes speed X: ray bounces off a boundary and changes speed Y: ray changes direction Z: ray passes through a boundary and maintains constant speed X: ray bounces off a boundary and changes direction Y: ray maintains constant speed Z: ray passes through a boundary and does not change direction

Which of the following statements is true about women and minorities in early psychology? a. in the early 20th century, numerous graduate schools recruited women and minorities to study psychology. b. opportunities in higher education were limited for women and minorities in the early 20th century due to discrimination. c. despite some obstacles, there were numerous employment opportunities for women and minorities. d. women and minorities were often selected to do academic research in an effort to make the field more diverse.

The current in a hair dryer measures 11 amps. the resistance of the hair dryer is 12 ohms. what is the voltage?unit:

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.