copper bar of thermal conductivity 401 W/(m·K) has one end at 122°C and the other end at 24°C. The length of the bar is 0.110 m and the cross sectional area is 1.0x10-6 m2. (a) What is the rate of heat conduction along the bar? (b) What is the temperature gradient in the bar? (c) If two such bars were placed in series (end to end) between the same temperature baths,
Energy transfer
The flow of energy from one region to another region is referred to as energy transfer. Since energy is quantitative; it must be transferred to a body or a material to work or to heat the system.
Molar Specific Heat
Heat capacity is the amount of heat energy absorbed or released by a chemical substance per the change in temperature of that substance. The change in heat is also called enthalpy. The SI unit of heat capacity is Joules per Kelvin, which is (J K-1)
Thermal Properties of Matter
Thermal energy is described as one of the form of heat energy which flows from one body of higher temperature to the other with the lower temperature when these two bodies are placed in contact to each other. Heat is described as the form of energy which is transferred between the two systems or in between the systems and their surrounding by the virtue of difference in temperature. Calorimetry is that branch of science which helps in measuring the changes which are taking place in the heat energy of a given body.
A copper bar of thermal conductivity 401 W/(m·K) has one end at 122°C and the other end at 24°C. The length of the bar is 0.110 m and the cross sectional area is 1.0x10-6 m2.
(a) What is the rate of heat
(b) What is the temperature gradient in the bar?
(c) If two such bars were placed in series (end to end) between the same temperature baths, what would script p be?
(d) If two such bars were placed in parallel (side by side) with the ends in the same temperature baths, what would script p be?
(e) In the series case, what is the temperature at the junction where the bars meet?
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