When Does a Protostar Become a Main- Sequence Star

question 72

Multiple Choice

When does a protostar become a main- sequence star?

• A)at the instant that the first hydrogen fusion reactions occur in the protostar's core
• B)when it becomes luminous enough to emit thermal radiation
• C)when a piece of a molecular cloud first begins to contract into a star
• D)when the rate of hydrogen fusion becomes high enough to balance the rate at which the star radiates energy into space

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Definitions:

Organisational Design

The process of shaping an organization's structure and roles to align with its strategies, goals, and environment, ensuring it can operate effectively.

High Performance

Achieving significantly better outcomes or efficiencies, usually in the context of organizational or individual work, through effective strategies and practices.

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The feeling of pleasure or contentment arising from the fulfillment of one's desires, expectations, or needs.

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Mechanistic designs are centralised with many rules and procedures, a clear-cut division of labour, narrow spans of control and formal coordination.