Two Stars,A and B,have the Same Emissivity,but the Radii and Surface

question 53

Multiple Choice

Two stars,A and B,have the same emissivity,but the radii and surface temperatures are different with R_A = 0.5R_B,and T_A = 2T_B.Assuming the temperature of space to be negligible,which star radiates the most energy per unit time?

• A)Star A
• B)Star B
• C)Both radiate the same amount of energy per unit time.
• D)More information is needed in order to make a determination.

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Definitions:

Resistance

The refusal to accept or comply with something; the attempt to prevent something by action or argument.

Terrible Experience

An event or situation that is extremely distressing, traumatic, or horrifying to an individual.

Defense Mechanism

A collective term for a number of reactions that try to ward off or lessen anxiety by various unconscious means.

Id

In Freudian psychoanalysis, the part of the mind that is the source of instinctual impulses and demands for immediate satisfaction of primitive needs.