The Magnitude of the Gravitational Field at Point P, Due $\times$

question 77

Multiple Choice

The magnitude of the gravitational field at point P, due to the body of mass m, is (G = 6.67 $\times$ 10^-11 N·m²/kg²)

• A) 2.67 \(\times\) 10^-11 N/kg
• B) 2.67 \(\times\) 10^-12 N/kg
• C) 9.81 N/kg
• D) 5.34 \(\times\) 10^-11 N/kg
• E) None of these is correct.

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Definitions:

M Line

Line in the center of the H zone made of delicate filaments that holds the myosin myofilaments in place in the sarcomere of muscle fibers.

Myosin Head

The globular part of the myosin protein that binds to actin filaments in muscle cells during contraction.

Troponin

A protein complex involved in the regulation of skeletal and cardiac muscle contraction, which binds to calcium ions causing a change that allows muscle contraction.

ATPase Activity

The enzymatic activity involved in hydrolyzing ATP (adenosine triphosphate) to release energy.