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A cup of hot coffee is placed on a metal table in a room. By which of the following methods does it lose heat?

Correct Answer: conduction, convection and radiation

Explanation:

Part of the heat is conducted away by the metal table. Convection currents in air near the surface of the coffee are set up which accounts for some heat loss. Heat is also lost by radiation from the hot coffee to the surroundings. Most of the heat is lost by the last method.


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