Question 14.3: A playful child left alone has run a vacuum cleaner in rever...
A playful child left alone has run a vacuum cleaner in reverse, creating a dust cloud. If the cloud consists of 0.001, 0.01, and 0.1 mm diameter particles, and the particle density is 700 kg/m³, will the child be able to clean up the mess by dusting the furniture before her mother returns an hour later? Assume that the particles near the ceiling must settle 2.5 m before depositing on various surfaces, and that the air temperature is 20°C.
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