Answer:
It will heat up until the equilibrium temperature.
Step-by-step explanation:
Hello,
Based on the initial state, the book was cooled down by the air-conditioned system causing a diminishing in its temperature. Then, as long as it was placed in a balcony that is at the summer day's temperature that is for sure higher than the inside's temperature, it will be heated up causing an increasing in its temperature. Such increasing will proceed until the equilibrium temperature, that is when it remains constant when the time go by.
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