Metal and wood common temperature for neutral feel

Click For Summary

Homework Help Overview

The discussion revolves around determining the common temperature at which a block of wood and a block of metal would feel neutral to the touch, neither hot nor cold. The subject area includes concepts of thermal equilibrium and heat transfer, particularly in relation to specific heat capacities of different materials.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants explore the relationship between heat transfer and the sensation of temperature, questioning how conduction affects the perception of warmth or coolness. There is discussion about the role of thermal equilibrium and the specific heat capacities of wood and metal.

Discussion Status

The conversation is ongoing, with participants offering insights into the mechanisms of heat transfer and questioning the assumptions related to thermal equilibrium. Some guidance has been provided regarding the factors influencing the sensation of temperature, but no consensus has been reached.

Contextual Notes

Participants note a lack of familiarity with thermodynamics and express uncertainty about the relevance of heat capacity in this context. The discussion is framed within the constraints of a homework assignment, focusing on conceptual understanding rather than calculations.

Tricause
Messages
8
Reaction score
0
Metal and wood common temperature for neutral "feel"

Homework Statement


Taken from the homework: At what common temperature will a block of wood and a block of metal both feel neither hot nor cold to the touch.


Homework Equations


I believe it is just conceptual, so I do not know if one is necessary; though I most certainly could be mistaken.


The Attempt at a Solution


I know that this has to do with specific heat capacity and that metal has a lower one and that it takes less energy to heat or cool metal, and thus can feel hotter or colder depending on the temperature. I know this involves the transfer of energy from the hand to the object, and I believe it has to do with equilibrium. Yet, I am at a loss on where to go next in this question. I am assuming that the answer has to deal with when the two reach a point of equilibrium.
 
Physics news on Phys.org


It's more to do with conduction.
Assuming they are both cooler than your body, heat will flow from your body to them - the faster heat flows the colder it seems.
So which one will heat flow to most quickly?
 
Last edited:


mgb_phys said:
So which one will heat flow to most quickly?
Metal.
 


i do not know much about thermodynamics but isn't the feeling of hot and cold due to of heat flowing in or out of your hand because of the temperature difference.Wouldn't this feelings stop at thermal equilibrium which is at the temperature of your skin in this case? Heat capacity usually deals with energy required to raise temperature of a specific material and I don't think it maters in this problem
 


bp_psy said:
Wouldn't this feelings stop at thermal equilibrium which is at the temperature of your skin in this case?
That must be it -- at that temperature no energy would be needed to be transferred to your skin and thus there would be neither hot nor cold feeling. Thanks.
 

Similar threads

Replies
9
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 3 ·
Replies
3
Views
5K
  • · Replies 5 ·
Replies
5
Views
2K
Replies
0
Views
1K
  • · Replies 1 ·
Replies
1
Views
2K
Replies
54
Views
9K
  • · Replies 3 ·
Replies
3
Views
4K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K