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One end of an insulated metal rod is maintained at 100.0o
Chapter 17, Problem 64E(choose chapter or problem)
One end of an insulated metal rod is maintained at 100.0o C, and the other end is maintained at 0.00o C by an ice–water mixture. The rod is 60.0 cm long and has a cross-sectional area of 1.25 cm2. The heat conducted by the rod melts 8.50 g of ice in 10.0 min. Find the thermal conductivity k of the metal.
Questions & Answers
QUESTION:
One end of an insulated metal rod is maintained at 100.0o C, and the other end is maintained at 0.00o C by an ice–water mixture. The rod is 60.0 cm long and has a cross-sectional area of 1.25 cm2. The heat conducted by the rod melts 8.50 g of ice in 10.0 min. Find the thermal conductivity k of the metal.
ANSWER:Solution 64E Step 1: Area of cross section A = 1.25x10 4 m 2 Hot temperature T = 100°C H Cold temperature T C = 0°C Length of the rod L = 0.6 m Mass of ice melted m = 8.5 g or 8.5x10 Kg3 Time taken to melt t = 10 min or 600 s