5. You decide to cliff dive with your friends, and jump off the cliff first. Your friends hear a splash 7 seconds later. Neglecting fluid friction, how fast were you going when you entered the water? 6. What happens to the forces on a person skydiving, so that they reach a maximum speed? As the skydiver gains speed, their weight stays the same but the air resistance increases.

The sun generates both mechanical and electromagnetic waves. which statement about those wave is true?

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.

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present