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← ScienceWhich outcome occurs when aerodynamic surfaces fail to maintain laminar flow?
A)Increased drag and lift instability✓
B)Decreased skin friction coefficient
C)Airfoil maintains peak lift
D)Pressure gradient remains unchanged
💡 Explanation
Increased drag results from turbulence if laminar flow separates; the **adverse pressure gradient** causes the boundary layer to thicken, which leads to separation because the reverse flow increases drag and reduces effective lift rather than maintaining predicted lift.
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