   Chapter 11.5, Problem 11.4QQ

Chapter
Section
Textbook Problem

Two rods of the same length and diameter are made from different materials. The rods are to connect two regions of different temperature so that energy will transfer through the rods by heat. They can be connected in series, as in Figure 11.7a (page 363), or in parallel, as in Figure 11.7b. In which case is the rate of energy transfer by heat larger? (a) When the rods are in series. (b) When the rods are in parallel. (c) The rate is the same in both cases.

To determine
The mass of gold on earth and moon.

Explanation

Given Info: Weight of gold on earth and moon is 1N.

Formula to calculate the rate of energy transfer by conduction through the rod is,

P=kA(ThTc)L

• k thermal conductivity.
• A is the area of the surface.
• Th is the higher temperature.
• Tc is the lower temperature.

Different materials ha different thermal conductivity

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