Calculating Energy Absorption of 2.0kg Bag of Ice

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SUMMARY

The discussion focuses on calculating the energy absorption of a 2.0 kg bag of ice used to keep a cooler cold for 5.5 hours. The initial temperature of the ice is -4ºC, and after 5 hours, it becomes liquid water at 3ºC. The formula for power, defined as energy divided by time, is essential for this calculation. Participants emphasize the importance of identifying givens and unknowns to effectively apply the relevant thermodynamic equations.

PREREQUISITES
  • Understanding of thermodynamics principles
  • Familiarity with the specific heat capacity of water and ice
  • Knowledge of the phase change of ice to water
  • Ability to apply the formula for power: Power = Energy / Time
NEXT STEPS
  • Research the specific heat capacity of ice and water
  • Learn about the latent heat of fusion for ice
  • Study the calculations involved in energy transfer during phase changes
  • Explore practical applications of thermodynamic principles in real-world scenarios
USEFUL FOR

Students in physics or engineering, educators teaching thermodynamics, and anyone interested in practical applications of energy absorption calculations.

Zeitgeist
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A 2.0 kg bag of ice is used to keep a cooler of pop cold for 5.5 h. If the ice had an initial temperature of -4ºC and, after 5h, was liquid water with a temperature of 3ºC, find the power of energy absorption.

Any help would be great. I don't know where to start:confused:.
 
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Zeitgeist said:
A 2.0 kg bag of ice is used to keep a cooler of pop cold for 5.5 h. If the ice had an initial temperature of -4ºC and, after 5h, was liquid water with a temperature of 3ºC, find the power of energy absorption.

Any help would be great. I don't know where to start:confused:.
Write out your givens and your unknown(s). Do you know which formula(e) to use? Is there a chapter in your text you've read over and considered?
 
Power = energy / time
 

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