An iron bar 2.0 cm x 3.0 cm x 10.0 cm at a temperature of 95 °C is dropped into a barrel of water at 25 °C. The barrel is large enough so that the water temperature rises negligibly as the bar cools. The rate at which heat is transferred from the bar to the water is given by the expression Q (J/min) = UA (T,- T) where U 0.05 J/(min cm °C)] is a (cm ) is the exposed surface area of the bar, T, and Tw are the surface temperature of the bar and the water temperature, respectively. The heat capacity of the bar is 0.46 J/(g °C). Heat conduction in iron is rapid enough for the temperature T, to be considered uniform throughout the bar. a) Write an energy balance on the bar b) Plot the expected plot of T, versus t and then curve fitting. n')(7.7 g/cm³) = 462 g M = (60 cm)(7.7 g/cm) = 462 g = 0.46 kJ/(kg. C), T = 25°C M 3D160 ст ст C, U = 0.050 J/(min cm2.C) A = 2[(2(3) + (2)(10) + (3)(10)]em² = 112 cm %3D %3D %3! %3D

The term fluid represents a type of substance that can easily change its shape under any external pressure/force and can flow. Fluids can acquire any shape in which it is stored and can resist normal stresses but cannot resist shear stress in rest condit…