S3 Physics: Heat: If boiling water was put in both a black flask and a silver flask, in which flask would the water cool down quickest and why?

Question

If boiling water was put in both a black flask and a silver flask, in which flask would the water cool down quickest and why?

Marilyn Bob-Manuel · Accepted Answer

Black flask quickest. Dark surface absorbs infrared radiation and emits it, more heat is lost.

If boiling water was put in both a black flask and a silver flask, in which flask would the water cool down quickest and why?