A cylindrical copper rod 37 cm long and 7 5 cm in diameter is placed upright on a hot plate held at a constant temperature of 120 C, as indicated in FIGURE 17 41 A small depression on top of the rod holds a 25 g ice cube at an initial temperature of 0 0 C How much time does it take for the ice cube to melt Assume there is no heat loss through the vertical surface of the rod, and that the thermal conductivity of copper is 390 W (m ( C) Figure 17 41 7 5 cm 37 m 120 C

Question: A cylindrical copper rod 37 cm long and 7.5 cm in diameter is placed upright on a hot plate held at a constant temperature of

A cylindrical copper rod 37 cm long and 7.5 cm in diameter is placed upright on a hot plate held at a constant temperature of 120 Â°C, as indicated in FIGURE 17-41. A small depression on top of the rod holds a 25-g ice cube at an initial temperature of 0.0 Â°C.

How much time does it take for the ice cube to melt? Assume there is no heat loss through the vertical surface of the rod, and that the thermal conductivity of copper is 390 W/(m ( CÂ°).

Figure 17.41

7.5 cm 37 m 120 C

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