A electric heater is used to heat a room of volume 62m3 , Physics

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A electric heater is used to heat a room of volume 62m3

An electric heater is used to heat a room of volume 62m³ . Air is brought into the room at 5⁰ and its completely replaced twice perhour. Heat loss through the walls amounts to approximately 850kcal/h. If the air is to be maintained at 20^o C, what minimum wattage must the heater have? (The specific heat of air is about .17 kcal/kg.C^o . )

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Physics: A electric heater is used to heat a room of volume 62m3

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Physics: A electric heater is used to heat a room of volume 62m3

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