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Etsy - Conversat xW Weebly xYy] WileyPLUS a x re https://edugen.wileyplus.com/edugen/student/mainfr.uni WileyPLUS: MyWileyPLUS I Help I Contact Us I Cutnell, Physics, 11e GENERAL PHYSICS (PHYS 2001/ Gradebook ORION Downloasdable eTextbook ment HESSAGE MY INSTRUCTORFULL SCREEN PRINTER VERSION BACK Chapter 12, Problem 067 Chalkboard Video ? Your answer is partially correct. Try again. ntendorsolt.m?262 provdes a model for solving problems such as this. A 42.9-kg block of ice at ??C is sliding on a horizontal surface. The initial speed of the ice is 8.10 m/s and the final speed is 3.11 m/s. Assume that the part of the block that melts has a very small mass and that all the heat generated by kinetic friction goes into the block of ice, and determine the mass of ice that meits into water at 0C 0.005 the tolerance is +/-296 Question Attempts: 5 of 12 used SAVE FOR LATER All Rights Reserved A Division of 2shn Woley &Soos.Ins; Version 4.24.8.2 e here to search D LL

Explanation / Answer

The decrease of the block’s kinetic energy is equal to the work that is done by the friction force.

Initial KE = ½ * 42.9 * 8.1^2 =1407.33J

Final KE = ½ * 42.9 * 3.11^ 2 = 207.47 J

Work = 1407.33 – 207.47 = 1200 J

The heat of fusion of ice is 3.33 * 10^5 J/kg

1200 = m * 3.33 * 10^5

m = 0.0036 kg

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