Which object will cool faster when kept in open air, the one at 3000c or the one at 1000c why?
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Because while an object is kept in air it is exposed to a large area (environment) and it loses a large amount of heat to the surrounding air to maintain the thermal equilibirium...
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Explanation:
Rate of cooling is directly proportional to temperature change. The one at 300oC will cool faster. TEMP DIFFERENCE BETWEEN SYSTEM AND SURROUNDINGS IS DIRECTLY PROPORTIONAL TO RATE OF COOLING
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