Research incandescent bulbs and CFLs. Write a 150 word summary describing how each bulb works and include the answers to the questions above. The questions above: 1. What kind of energy transformation is occurring? 2. How much water was melted by the incandescent light bulb? By the CFL?
3. How do you explain the difference in the amount of water?
4. Which light bulb do you think is more energy efficient?

Diego is trying to lift a piano to the second floor of his house. diego uses a pulley system and gives a big lift to the piano. the piano moves upward, then stops, and then it starts to fall to the ground. which list best describes the forces on the piano in the proper order? positive force → balanced force → negative force negative force → balanced force → positive force positive force → unbalanced force → negative force negative force → unbalanced force → positive force