3. A thin square sheet of metal sides of 0.5 m is heated from 25°C to 100°C. If the linear expansivity of the material is a 1.2 x 10³(1/°C), what is the increase in its area?
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A: (i) The relation of the rate is Qt=kA∆T∆xThus, ∆T=Tf-Ti=273.15+50K-0K∆T=50 KQt=0.010 W/m·K0.6 m250…
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