To determine which object has particles with the highest average kinetic energy, we need to consider the temperatures of each option. The average kinetic energy of particles is directly related to the temperature of the substance.
- A drop of water at 90°C has a higher temperature compared to water at 37°C, the water in a swimming pool at 40°C, and the iceberg at 0°C.
- Both the iceberg and the water at 0°C have the same temperature, but it is lower than all other options.
- Water at 37°C is lower than both 90°C and 40°C.
Since kinetic energy increases with temperature, the drop of water at 90°C has the highest average kinetic energy.
Answer: A drop of water at 90°C.