21. A mass of 60 g of copper (specific heat capacity 0.4 Jg-1K-1) is transferred from a furnace into a mass of 40 g of water at 20°C. The final temperature becomes 40°C. What was the temperature of the furnace? ATE İZ. bubat m SINO 5°C makes the final
The difference between convex and concave polygons lies in the measures of their angles. For a polygon to be convex, all of its interior angles must be less than 180 degrees. Otherwise, the polygon is concave.