Mintu wants to increase the heat transfer between a metal iron and another piece of metal he wants to shape. He decides to increase the time the two metals are in contact, use a larger metal iron, and use a new metal material with a higher specific heat.
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This question tests the factors affecting heat conductivity.
They are as follows.
1.) Temperature difference across the material.
Hotter materials lose heat quickly to colder materials.
2.) Thickness of the material
The thicker the material, the slower the heat transfer.
3.) Area of the material
The larger the area the greater the conductivity.
4.) Thermal conductivity of a material per unit thickness.
The greater the thermal conductivity the greater the conduction.
They are as follows.
1.) Temperature difference across the material.
Hotter materials lose heat quickly to colder materials.
2.) Thickness of the material
The thicker the material, the slower the heat transfer.
3.) Area of the material
The larger the area the greater the conductivity.
4.) Thermal conductivity of a material per unit thickness.
The greater the thermal conductivity the greater the conduction.
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Factors that affect rate of heat flow include the conductivity of the material, temperature difference across the material, thickness of the material, and area of the material. Different materials have greater or lesser resistance to heat transfer, making them better insulators or better conductors.
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