A tube with sealed ends has some sand at one end. When the tube is turned upside down the sand falls 0. 6m then settles down again. The energy stays in the sand as thermal energy. Use g=9. 81m/s2.

If you quadruple the temperature of a black body, by what factor will the total energy radiated per second per square meter increase? 1,024 64 16 4 256 submit answer

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.

Does anyone have the answers to online physics course plato course physics, semester a v3.0