The Angular Momentum of a System Remains Constant

question 2

Multiple Choice

The angular momentum of a system remains constant

• A) when the total kinetic energy is constant.
• B) when no net external force acts on the system.
• C) when the linear momentum and the energy are constant.
• D) when no torque acts on the system.
• E) all the time since it is a conserved quantity.

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Definitions:

Stimulant

A substance that raises levels of physiological or nervous activity in the body, often used to increase alertness, attention, and energy.

Sleep

A naturally recurring state of mind and body, characterized by altered consciousness, relatively inhibited sensory activity, reduced muscle activity, and inhibition of nearly all voluntary muscles during rapid eye movement (REM) sleep phases.

Aging

The process of becoming older, which includes biological, emotional, intellectual, and social changes.

Hypothalamus

A region of the brain that regulates basic biological needs and motivational systems such as hunger, thirst, and body temperature.