A Typical Protostar May Be Several Thousand Times More Luminous

question 100

Multiple Choice

A typical protostar may be several thousand times more luminous than the Sun. What is thesource of this energy?

• A)chemical combustion of hydrocarbons
• B)nuclear fusion in its core
• C)from the release of gravitational energy as the protostar continues to shrink
• D)the ionization of the gas as it heats up
• E)from nearby hot stars or supernovae that have initiated the star formation process

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Definitions:

Dependent-Samples T Test

A statistical test applied to compare the means of two related groups of samples, typically used when the samples are paired or matched in some way.

Capital Intensity Ratio

A measure of how much capital is used in production, often expressed as the ratio of total assets to sales revenue.

Full Capacity

The maximum level of production or output that a facility can achieve under normal operating conditions.

Operating Capacity

The maximum output a company can produce under normal working conditions.