A CD Player and Its Battery Together Do 500 KJ

question 45

Multiple Choice

A CD player and its battery together do 500 kJ of work.The battery also releases 250 kJ of energy as heat and the CD player releases 50 kJ as heat due to friction from spinning.What is the change in internal energy of the system,with the system regarded as the battery and CD player together?

• A)+200 kJ
• B)(-700 kJ)
• C)(-800 kJ)
• D)(-200 kJ)
• E)(-750 kJ)

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Definitions:

Dominant

Exhibiting power or influence over others, or referring to a trait that is expressed in an organism over other genetic traits when two different genes for the same trait are present.

Theory of Mind

The cognitive capacity to attribute mental states, like beliefs and intentions, to oneself and others, understanding that others have beliefs and perspectives different from one's own.

Moral Reasoning

The process by which individuals make decisions about what is right and wrong, based on personal, societal, and ethical principles.

Relational Aggression

A form of aggression that harms others through manipulation or damage to relationships rather than physical violence.