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A red supergiant star is found to have a surface temperature of 2500 K and a luminosity 100,000 times that of the Sun.Use the Hertzsprung-Russell diagram in Figure 10-8 of Comins,Discovering the Essential Universe,6th ed.,to determine its approximate radius compared with that of the Sun.
Confident
Having strong belief or full assurance in oneself or in the reliability, truth, ability, or strength of someone or something.
Cognitive-Behavioral
Relating to a psychotherapeutic approach that addresses dysfunctional emotions, behaviors, and cognitions through a goal-oriented, systematic process.
Premature Ejaculation
A sexual dysfunction characterized by ejaculation that occurs with minimal sexual stimulation before, upon, or shortly after penetration and before the person wishes it.
Erectile Difficulties
A condition characterized by the inability to develop or maintain an erection of the penis during sexual activity.
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