1. A househusband is steaming beef for his family in a pan with a surface area of 23.544 cm2 that is covered with (i) a 50 g lid, and (ii) a 6 kg lid. Assuming there is sufficient water for steam generation inside the pan,
(a) Roughly estimated the temperature inside the pan in each case
(b) For which case will the cooking time be shorter
(c) A 6 kg lid is too heavy in Case (ii). Please develop an engineering solution to reduce the mass of the lid to less than 0.4 kg while having the cooking time at least shorter than Case (ii).