The temperature of object Q is monitored every 10 s while the object sits in a cooler environment. The data are:
Time (s): 0 10 20 30 40 50
Temp (∘C): 85 70 60 58 65 63
Answer the following.
(a) Identify the 10 s time interval during which an external energy input most likely occurred.
(b) Justify your answer by describing how the temperature slope before, during, and after that interval supports your conclusion.