Question: Air at 7 0 F flows over a 2 ft . wide flat plate at a velocity of 5 0 ft / s . a

Air at 70F flows over a 2 ft. wide flat plate at a velocity of 50 ft/s.
a. What is the critical length?
b. What is the drag force if the plate is 1 ft. long?
c. What is the drag force if the plate is 15 ft. long?

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