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← HistoryWhich mechanism describes a Roman siege tower’s (Helepolis) vulnerability to fire?
A)Enhanced convective heat transfer✓
B)Reduced structural tensile strength
C)Elevated thermal expansion coefficient
D)Decreased radiation heat absorption
💡 Explanation
Enhanced convective heat transfer causes rapid temperature rise in the tower's wood because fire provides a large temperature gradient that accelerates heat transfer, therefore increasing fire risk rather than preventing it. The tower ignites because hot gases flow around supports, facilitating rapid heating.
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