Between sand in water , sugar dissolved in water, vinegar with water and sea water which is not considered a solution

answer by yourhope:

how do models compare to real-world objects?

d. most models represent a real-world object in a simpler way.

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a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.