My physics class has turned to online due to the COVID-19 and I am having trouble with some of the word problems my teacher gave me to work on.  She presented me with: I am contemplating a career change.  If I had 500g of stolen gold jewelry, how much energy would I have to add to it to melt it (so that it was not longer recognizable)? Pretend that it is pure gold.  Would you be able to show me how to accomplish this problem so I can see the steps? Thank you for your time. John Payton

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 55P
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My physics class has turned to online due to the COVID-19 and I am having trouble with some of the word problems my teacher gave me to work on. 

She presented me with: I am contemplating a career change.  If I had 500g of stolen gold jewelry, how much energy would I have to add to it to melt it (so that it was not longer recognizable)? Pretend that it is pure gold. 

Would you be able to show me how to accomplish this problem so I can see the steps?

Thank you for your time.

John Payton 

Expert Solution
Step 1

Given:

Mass of gold (m) = 500 g.

Specific heat of gold (c) = 0.129 J/g ̊C

Latent heat of melting (lf) = 63 J/g

Step 2

Total heat is given to gold is given as,

Physics homework question answer, step 2, image 1

Let the initial temperature of gold (room temperature) (Ti) = 25 ̊C

The melting point of gold (Tf) = 1064 ̊C

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