A 2kg book is given 50 joules gravitation potential energy on earth. How high was the book lifted

Around faucet handle is part of a(n) a. lever b. screw c. inclined plane d. wheel and axle

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.

What organization and environment is described above?