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March 25, 2017

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The temperature difference in and outside an electric oven is 150oC glass fitted on the door has thickness and area of 0.2cm and 300cm2 respectively. if thermal conductivity of glass is 0.84Js-1m-1K-1 then how much heat will be lost in one minute?

  • Physics - ,

    (Area)*(Thermal conductivity)*(temperature difference)*(time)/(thickness) = __ J

    Make sure you use meters and square meters for thickness and area, respectively. Time must be 60 s

  • Physics - ,

    Area=o.oo2m temperature difference=150oK thermal conductivity=0.84Js-1m-1K-1 thickness=0.03m time=60s ^=delta thermal conductivity=K A^T t\L 0.84*0.03*150*60\0.002=113400J

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