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Two objects A & B are put into thermal contact ar equilibrium. • A) mA = 100 g; CA = 900 J/(kg K) B) mB= 200 g; CB = 450 J/(kg K) • Their temperatures are initial TA and TB, and obj hotter. Which statement about the final equilibrium temp correct? Tave TA+TB 2 is the average of the initial tempe

Two objects A & B are put into thermal contact ar equilibrium. • A) mA = 100 g; CA = 900 J/(kg K) B) mB= 200 g; CB = 450 J/(kg K) • Their temperatures are initial TA and TB, and obj hotter. Which statement about the final equilibrium temp correct? Tave TA+TB 2 is the average of the initial tempe

Principles of Physics: A Calculus-Based Text
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter17: Energy In Thermal Processes: The First Law Of Thermodynamics
Section: Chapter Questions
Problem 9OQ
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Two objects A & B are put into thermal contact and come to equilibrium. - A) \( m_A = 100 \, \text{g}; \, c_A = 900 \, \text{J/(kg K)} \) - B) \( m_B = 200 \, \text{g}; \, c_B = 450 \, \text{J/(kg K)} \) Their temperatures are initially \( T_A \) and \( T_B \), and object A is initially hotter. Which statement about the final equilibrium temperature \( T_{EQ} \) is correct? \[ T_{ave} = \frac{T_A + T_B}{2} \] is the average of the initial temperatures. Options: - \( T_{EQ} < T_B \) - \( T_{EQ} = T_{ave} \) - \( T_{EQ} = T_A \) - \( T_{EQ} = T_B \) - \( T_{EQ} > T_A \) - \( T_{ave} > T_{EQ} > T_B \) - \( T_{ave} < T_{EQ} < T_A \) (Correct option selected)
Transcribed Image Text:Two objects A & B are put into thermal contact and come to equilibrium. - A) \( m_A = 100 \, \text{g}; \, c_A = 900 \, \text{J/(kg K)} \) - B) \( m_B = 200 \, \text{g}; \, c_B = 450 \, \text{J/(kg K)} \) Their temperatures are initially \( T_A \) and \( T_B \), and object A is initially hotter. Which statement about the final equilibrium temperature \( T_{EQ} \) is correct? \[ T_{ave} = \frac{T_A + T_B}{2} \] is the average of the initial temperatures. Options: - \( T_{EQ} < T_B \) - \( T_{EQ} = T_{ave} \) - \( T_{EQ} = T_A \) - \( T_{EQ} = T_B \) - \( T_{EQ} > T_A \) - \( T_{ave} > T_{EQ} > T_B \) - \( T_{ave} < T_{EQ} < T_A \) (Correct option selected)
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