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 Form 1 Physics heat transfer topical questions and answers

Figure 4 shows two identical balloons A and B. The balloons were filled with equal amounts of the same type of gas. The balloons are suspended at a distances #x_1# and #x_2# from a metal cube filled with boiling water and placed on an insulating material.
figheat10620201503.JPG
The face of the cube towards A is bright and shiny and the face towards B is dull black. State with reason the adjustments that should be made on the distances #x_1# and
#x_2# so that the rate of change of temperature in both balloons is the same.

 (2m 1s)
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