In general, precession results when

A)

torque acts on a body with zero angular momentum.
B)

the direction of torque acting on an object is parallel to the direction of angular momentum of the body.
C)

there is no torque acting on a body.
D)

the direction of torque acting on an object has a component perpendicular to the direction of angular momentum of the body.
E)

the direction of torque acting on an object is opposite to the direction of angular momentum of the body.


D

Physics & Space Science

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Indicate whether the statement is true or false

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Light enters a substance from air at an angle of 32.0°, and continues at an angle of 23.0°. What is the index of refraction of the substance?

A) 0.74 B) 1.11 C) 1.28 D) 1.36 E) 1.52

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In a closed system, the kinetic energy plus the potential energy is a constant

a. True b. False Indicate whether the statement is true or false

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