Across-country runner accelerates from 4 m/s to 7 m/s over the course of 5 seconds. what is the runner's average rate of acceleration? a. 0.3 m/s/s b. 0.6 m/s/s c. 1.4 m/s/s d. 2.2 m/s/s

Air flows upward in the wick of a lantern because of the liquid property called

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.

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.