MOST of the Energy Emitted by a Protostar Comes From

question 309

Multiple Choice

MOST of the energy emitted by a protostar comes from:

• A) radioactive elements.
• B) gravitational potential energy being converted to heat as the protostar collapses.
• C) infalling material colliding with the protostar's surface.
• D) nuclear fusion.

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Definitions:

Encapsulation

A fundamental concept in object-oriented programming that involves bundling the data (attributes) and methods (functions) that operate on the data into a single unit or class, and restricting access to the specifics of the data or methods.

Head Instance Variable

A variable, typically in a linked list or similar data structure, that holds a reference to the first element or node.

Null

A special marker used in programming to denote that a variable does not hold any valid object or value at a particular time.

Preorder Processing

A type of tree traversal where each node is processed before its child nodes.