The stress-strain diagram for a bar of steel alloy is shown. Determine: a) The modulus of Elasticity for the material b) The proportional limit c) The ultimate stress d) The modulus of resilience e) If the bar has a circular cross section with an initial diameter of 10-mm and is loaded to 260-Mpa, what will be the decrease in diameter under this load? Use v= 0.25 (MPa)

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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.