To determine which object has particles with the highest average kinetic energy, we need to consider the temperature of each substance, as the average kinetic energy of particles in a substance is directly related to its temperature in Kelvin.
- Water at 40°C: 40 + 273.15 = 313.15 K
- Iceberg at 0°C: 0 + 273.15 = 273.15 K
- Drop of water at 90°C: 90 + 273.15 = 363.15 K
- Water at 37°C: 37 + 273.15 = 310.15 K
Comparing the temperatures in Kelvin:
- Water at 40°C: 313.15 K
- Iceberg at 0°C: 273.15 K
- Drop of water at 90°C: 363.15 K
- Water at 37°C: 310.15 K
The drop of water at 90°C has the highest temperature (363.15 K), which means it has the highest average kinetic energy of its particles.
Therefore, the answer is a drop of water at 90°C.
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