An Object Cools at a Rate (In ${ } ^ { \circ } \mathrm { C } / \mathrm { min }$

question 53

Multiple Choice

An object cools at a rate (in ${ } ^ { \circ } \mathrm { C } / \mathrm { min }$ ) equal to $\frac { 1 } { 10 }$ of the difference between its temperature and that of the surrounding air. If a room is kept at 20 $^\circ$ C and the temperature of the object is 28 $^\circ$ C, what is the temperature of the object 5 minutes later?

• A)22
• B)24
• C) \(20 + 5 e ^ { - 1 / 10 }\)
• D) \(20 + 8 e ^ { - 1 / 2 }\)
• E) \(20 + 5 e ^ { - 4 / 5 }\)
• F) \(20 + 8 e ^ { - 1 / 10 }\)
• G) \(28 - 8 e ^ { - 1 / 10 }\)
• H) \(28 - 10 e ^ { - 1 / 2 }\)

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Definitions:

Independent Evidence

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Five-Factor Model

A theory identifying five basic personality traits, including openness to experience, conscientiousness, extraversion, agreeableness, and neuroticism.

Extraversion

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Neuroticism

A personality trait characterized by emotional instability, anxiety, moodiness, and a higher propensity for psychological stress.