The diagrams depict four identical cans whose outer surfaces are either polished silver or coated dull black. Each can holds the same volume of water, which starts at $80^\circ$C. After five minutes in a cool room, which can has the coolest water?
Physics 5054 · O Level · Radiation
The diagrams depict four identical cans whose outer surfaces are either polished silver or coated dull black. Each can holds the same volume of water, which starts at $80^\circ$C. After five minutes in a cool room, which can has the coolest water?