To determine which object has particles with the highest average kinetic energy, we need to consider the temperature of each object. The average kinetic energy of particles in a substance is directly related to its temperature in Kelvin.
Let's convert the temperatures provided to Kelvin:
- A. Water at 37 degrees Celsius: \( 37 + 273 = 310 \) K
- B. Water at 40 degrees Celsius: \( 40 + 273 = 313 \) K
- C. A drop of water at 90 degrees Celsius: \( 90 + 273 = 363 \) K
- D. An iceberg at 0 degrees Celsius: \( 0 + 273 = 273 \) K
Now, we can compare the temperatures in Kelvin:
- A: 310 K
- B: 313 K
- C: 363 K
- D: 273 K
The highest temperature, and thus the highest average kinetic energy, is found in option C, a drop of water at 90 degrees Celsius.
Answer: C. a drop of water at 90 degrees Celsius
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