When 90 KJ Is Removed from a 2-Kg Copper Bar $\degree$

question 33

Multiple Choice

When 90 kJ is removed from a 2-kg copper bar, its temperature drops from 200 $\degree$ C to 85 $\degree$ C. The specific heat of copper is

• A) 0.16 kJ/kg\(\degree\)C.
• B) 0.19 kJ/kg\(\degree\)C.
• C) 0.23 kJ/kg\(\degree\)C.
• D) 0.39 kJ/kg\(\degree\)C.

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Definitions:

Reflexive Preferences

A concept in economics indicating that individuals prefer goods or scenarios that reflect their own preferences or identities.

Indifference Curves

Indifference curves are graphical representations in microeconomics, showing combinations of two goods between which a consumer is indifferent, reflecting preferences.

Formula

A mathematical expression that calculates or describes a relationship among different variables.

Marginal Rate

The rate at which one variable changes as another variable changes marginally or slightly.