An Airplane Flies in a Semi-Circular Arc in Order to Simulate

question 36

Multiple Choice

An airplane flies in a semi-circular arc in order to simulate "weightlessness" for its occupants.If the speed at which the plane flies is 750 km/hr,what is the radius of the semicircular path it flies in?

• A) 57 km
• B) 1.6 km
• C) 4.4 km
• D) 2.2 km
• E) 76 km

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Definitions:

Slow Fibers

Slow fibers are a type of muscle fiber that contract slowly and are stamina-oriented, relying on aerobic metabolism for energy, making them resistant to fatigue.

Fast Fibers

Muscle fibers characterized by quick contractions and a capacity for rapid, forceful movements but have lower endurance compared to slow fibers.

Excitation-Contraction Coupling

The physiological process that links muscle fiber excitation to muscle contraction, primarily in skeletal and cardiac muscles.

T Tubules

Extensions of the cell membrane that penetrate into the center of skeletal and cardiac muscle cells, aiding in the transmission of electrical impulses.