Answered: 1. A jeweler must melt 44.59 g of…

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter20: The First Law Of Thermodynamics

Section: Chapter Questions

Problem 20.43P: A glass windowpane in a home is 0.620 cm thick and has dimensions of 1.00 in 2.00 in. On a certain...

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1. A jeweler must melt 44.59 g of silver. Assume the silver starts at room temperature (20°C) and reaches a temperature just above its melting point (T = 1235 K). [Specific heat of silver c = 450 J/ (kg. K), heat of fusion of silver L_f = 1.05×10⁵ J/kg]
A. How much heat is transferred in order to raise the silver to its melting point?
B. How much heat is transferred during the phase change?
C. How much heat is transferred in order for the whole process to take place?
2. A hot rock with mass 250 g is dropped into an equal mass of cool water. Which temperature changes more, that of the rock or that of the water? Explain with reasons.

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