SC-1382
Radiation
Lower Sec Science · Secondary 2 · Hard · Radiation
Two identical cans of hot water are placed in a cool room. One can is painted shiny silver, the other is painted dull black. Which statement about their cooling is correct?
- The black can cools faster because it is a better emitter of heat radiation.
- The silver can cools faster because it reflects heat back into the room.
- Both cans cool at the same rate because they contain equal water.
- The silver can cools faster because shiny surfaces are better emitters.
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