Are These Thermal Expansion Statements Correct?

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Homework Help Overview

The discussion revolves around the correctness of various statements related to thermal expansion and heat transfer. Participants are evaluating specific claims about the behavior of materials when subjected to temperature changes.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants are attempting to verify the accuracy of several statements regarding thermal expansion and heat transfer. Questions are raised about the correctness of specific answers, particularly concerning the behavior of materials and the implications of temperature changes.

Discussion Status

The discussion is ongoing, with participants revisiting their answers and questioning the validity of their reasoning. Some guidance has been offered regarding specific statements, indicating a collaborative effort to clarify misunderstandings.

Contextual Notes

Participants express confusion about certain statements, particularly regarding the behavior of a bimetallic strip and the implications of heat addition on temperature. There is a lack of consensus on some answers, reflecting the complexity of the concepts involved.

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Homework Statement


For each of the following statements, determine whether is is correct or incorrect.

A. An iron plate has a hole cut in its center. When the plate is heated, the hole gets smaller.

B. When the Celsius temperature doubles, the Fahrenheit temperature doubles.

C. Cold objects do not radiate heat energy.

D. When the pendulum of a grandfather clock is heated, the clock runs more slowly.

E. In a bimetallic strip of brass and copper which curls when heated, the brass is on the inside of the curve.

F. When heat is added to a system, the temperature must rise.



Homework Equations





The Attempt at a Solution



A. INCORRECT
B. INCORRECT
C. INCORRECT
D. CORRECT
E. INCORRECT
F. CORRECT

Are these right?
 
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Anyone have an idea on these?
 
Okay I changed my answers to...

A. INCORRECT
B. INCORRECT
C. INCORRECT
D. CORRECT
E. INCORRECT
F. CORRECT

and they aren't right, does anyone know where I am going wrong?
 
Hmmm, your answers don't look any different than what was in your first post. But anyway, reconsider your answer for F.
 
Oops...I meant to put...
A. INCORRECT
B. INCORRECT
C. INCORRECT
D. CORRECT
E. CORRECT
F. INCORRECT (Thanks)

I am confused about E?
 
I think you had E right the first time.
 
Oh okay...thank you much!
 

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