A Rod, with Sides Insulated to Prevent Heat Loss, Has

question 48

Short Answer

A rod, with sides insulated to prevent heat loss, has one end immersed in boiling water 100°C and the other end in a water-ice mixture at 0.00°C. The rod has uniform cross-sectional area of 4.04 cm² and length of 91 cm. Under steady state conditions, the heat conducted by the rod melts the ice at a rate of 1.0 g every 34 seconds. What is the thermal conductivity of the rod? (The heat of fusion of water is 3.34 × 10⁵ J/kg.)

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Definitions:

Disaccharidases

Enzymes located in the small intestine that catalyze the breakdown of disaccharides into monosaccharides, facilitating absorption.

Small Intestine

A part of the digestive system where most of the digestion and absorption of nutrients takes place, extending from the stomach to the large intestine.

Secretin

A hormone produced by the small intestine that stimulates the pancreas to release bicarbonate-rich fluid, aiding digestion.

Pancreatic Duct

A conduit through which digestive enzymes from the pancreas are transported to the small intestine.