1. The diagram shows 2 identical charged particles. How does the potential energy and the force of repulsion change as the charges are brought closer together? 2. For the positions labeled on the image, list in order from highest to lowest the potential energy of the roller coaster. How is the kinetic energy of the roller coaster related to these values?

3. Consider the motion and size of the two vehicles headed for each other on the road. Compare the kinetic energy of the vehicles.

According to the tide table below what time of day will the highest tide occur?

The passage that directs air to the lungs is called a. diaphragm. b. larynx. c. bronchi. d. pharynx.

Scout feels ill one day before school. her mother puts a thermometer in her mouth and the temperature begins to climb to 100°f. what is happening between the cooler thermometer and scout's body? a) scout's body is applying a force to the particles in the thermometer. b) kinetic energy is being transferred from her mouth to the thermometer. c) potential energy is being lost by the thermometer and gained by scout's body. d) the potential energy stored in foods is converted to mechanical energy to raise the mercury in the thermometer.