Test: MCAT Physical

1.

What causes the lift experienced by the wing of an airplane in level flight?

The difference in air density on the top and bottom surfaces of the wing

The ability to create turbulence on the upper surface of the wing

The difference in velocity of airflow on the top and bottom surfaces of the wing

The difference in absolute humidity between the upper and lower surfaces of the wing

The "attack angle" of the wing on the air stream

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