1: Take a turn or a thousand dollars (3)
3: Rapidity with which heat's dissipated (5)
5: Plots get Cuban revolutionary leader in a terrible mess (7)
7: Difficult newspaper or novel (4,5)
9: Song about death for lover of Theseus (7)
10: Good Republican source of life-giving system for short-handed office workers (5)
11: One final, huge Greek goddess (3)