Heat Question (Chapter 10) FEW Clarifications:
Conduction:
Which kettle allows water to boil first? Kettle A: Placed on top of a wire gauze supported by tripod stand and heated by a flame. Kettle B: Placed on another tripod stand heated by a flame WITHOUT wire gauze.
Ans is Kettle B because wire gauze allows heat to be conducted away faster.
HOWEVER, doesn't it make sense that Kettle A allows heat to be conducted via the wire gauze to heat up the water in the kettle whereas Kettle B does not as it lacks the wire gauze? So water in kettle A should boil first?
Which is the correct interpretation? Is my concept of conduction wrong?
Radiation:
A solar panel has a dull black surface to absorb more heat energy from the Sun. However, doesn't it also make sense that heat will be loss/radiated faster also as black surfaces are good radiators? Is my concept of radiation wrong again?
Conduction:
Means the heat get lost faster through the wire gauze
Means overall, less heat reaches kettle A
Radiation:
You are correct