Cup on a table, heat or work process?

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SUMMARY

The discussion centers on a physics problem involving a cup of water that increases in temperature from 20 degrees Celsius to 25 degrees Celsius over a 10-minute period. Participants analyze whether the temperature change is due to heat transfer from the environment or if it involves work being done on the water. The mention of a "trick question" suggests that the increase in temperature may not be straightforwardly attributed to heat alone, prompting deeper consideration of thermodynamic principles.

PREREQUISITES
  • Understanding of thermodynamics principles, specifically heat transfer.
  • Familiarity with the concept of work in physics.
  • Basic knowledge of temperature measurement and its implications.
  • Awareness of environmental factors affecting thermal equilibrium.
NEXT STEPS
  • Explore the laws of thermodynamics, particularly the first law regarding energy conservation.
  • Research the concept of thermal equilibrium and its implications in heat transfer.
  • Learn about the distinction between heat and work in thermodynamic processes.
  • Investigate real-world applications of heat transfer in everyday scenarios.
USEFUL FOR

Students studying physics, educators teaching thermodynamics, and anyone interested in understanding heat transfer and work in physical systems.

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Homework Statement



A cup sitting on the table contains 200g of water. You measure it at a certain time and it is 20 degrees Celsius. You leave the room and come back 10 minutes later. It is now 25 degrees Celsius. What can you conclude about the heat added to the water? [hint trick question]

Homework Equations





The Attempt at a Solution



My attempt is that I believe this is still heat transfer between a warmer environment and a colder cup. The fact that it says a trick question makes me wonder. Is this actually work being done?
 
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I don't see a trick!
 

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