A steel bar is held by two fixed supports as shown in the figure and is subjected to an increase of temperature AT = 100°C. If the coefficient of thermal expansion and Young's modulus of elasticity of steel are 11x10-6°C and 200 GPa, respectively, the magnitude of thermal stress (in MPa) induced in the

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Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.