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Ask the expert
Why does soap easily remove fats from metalware and glassware but not from plastic? Tom
First of all – this is a correct observation, as this problem does indeed exist: washing
May 17, 2012 זמן קריאה משוער 5 -
Ask the expert
What is capillary action and how is it affected by gravity? Ariel & Michal
Capillary action (or capillarity) describes the ability of a liquid to flow against
March 11, 2012 זמן קריאה משוער 7