A physicist makes a cup of instant coffee and notices that as the coffee cools its level drops 3.00 mm in the ordinary glass cup. Show that this cannot be due to thermal contraction by calculating the decrease in level if the 350 cm3?of coffee is in a?7.00?cm diameter cup and decreases in temperature from 95?C to?45.0?C. (Most of the drop in level is actually due to escaping bubbles of air.)?
(I tried 0.19934 mm and it was incorrect, please help!)