A metal kettle is placed on a grid over red-hot glowing coal and heated. Which are the principal thermal energy transfers through the base of the kettle and inside the water?
- Athrough kettle: conduction; within water: conduction
- Bthrough kettle: radiation; within water: convection
- Cthrough kettle: conduction; within water: convection
- Dthrough kettle: radiation; within water: conduction