Answer :
The temperature of object 60 and temperature of surrounding -12 in °C will have fastest change in temperature.
We need to know about the heat rate to solve this problem. The heat rate depends on the conductivity, surface area, temperature gap, and thickness. It can be written as
H = k . A . ΔT / L
where H is heat rate, k is conductivity, A is surface area ΔT is temperature gap and L is the thickness.
The greater temperature gap leads the object to change its temperature easily.
From the question above, the greater temperature gap is 60 and (-12) in °C where
ΔT = 60 - (-12)
ΔT = 72 °C
Find more on heat rate at: https://brainly.com/question/25677592
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