A System Absorbs 623 J of Heat While Doing 457

question 43

Multiple Choice

A system absorbs 623 J of heat while doing 457 J of work.What is the value of ΔU?

• A)+1080 J
• B)-166 J
• C)+166 J
• D)-1080 J
• E)+623 J

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Definitions:

Overt Observation

A research method where the subjects are aware that they are being observed, which can impact their behavior but also adheres to ethical transparency.

Participant Observation

A qualitative research method involving the researcher immersing themselves in a group or community to observe behaviors and interactions firsthand.

Researcher Reactivity

A phenomenon where the presence or behavior of the researcher influences the subjects' behavior, potentially biasing the study results.

Hawthorne Effect

A phenomenon where individuals alter their behavior due to their awareness of being observed as part of a study.