A Machine Part Consists of 0

question 36

Multiple Choice

A machine part consists of 0.10 kg of iron (of specific heat 470 J/kg ∙ K ) and 0.16 kg of copper (of specific heat 390 J/kg ∙ K) .How much heat must be added to the gear to raise its temperature from 18°C to 53°C?

• A)910 J
• B)3800 J
• C)4000 J
• D)4400 J

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Definitions:

Nikola Khrushchev

A Soviet politician who served as the leader of the Soviet Union during part of the Cold War, known for initiating the de-Stalinization process and facing the Cuban Missile Crisis.

Tehran Conference

A strategy meeting of Joseph Stalin, Franklin D. Roosevelt, and Winston Churchill from 28 November to 1 December 1943, during World War II, held in Tehran, Iran, which focused on war strategy and post-war reorganization.

Yalta Conference

Meeting of Franklin D. Roosevelt, Winston Churchill, and Joseph Stalin at a Crimean resort to discuss the postwar world on February 4–11, 1945; Joseph Stalin claimed large areas in eastern Europe for Soviet domination.