Q1. A cube of ice is taken from the freezer at -9.4°C and placed in a 94 g aluminium calorimeter filled with 315 g of water at room temperature of 20°C. The final situation is observed to be all water at 19°C. What was the mass of ice cube?
Q2. A plane leaves the airport in Galisto and flies 240 km 68 degrees east of north and then changes direction to fly 154 km at 48 degrees south of east, after which it makes an immediate emergency landing in the pasture. When airport sends out a rescue crew, how far will the crew have to fly to reach aircraft if they fly in a straight line from Galisto?