A Machine Gear Consists of 0 $\degree$ C? (Specific Heats of Iron and Copper Are 450 and 0.16

question 26

Multiple Choice

A machine gear consists of 0.40 kg of iron and 0.16 kg of copper. How much total heat is generated in the part if its temperature increases by 35 $\degree$ C? (Specific heats of iron and copper are 450 and 390 J/kg · $\degree$ C, respectively.)

• A) 910 J
• B) 8500 J
• C) 4000 J
• D) 5300 J

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Definitions:

Carbon Monoxide Poisoning

A potentially fatal condition caused by inhaling carbon monoxide gas, leading to symptoms such as headache, dizziness, and nausea, due to reduced oxygen carrying capacity of blood.

Smoke Inhalation

The act of breathing in combustion products during exposure to fire, which can lead to respiratory distress and other health issues.

Pulse Oximetry

A non-invasive method to monitor the oxygen saturation level of the blood using a device usually clipped to a finger.

Arterial Blood Gases

Tests that measure the levels of oxygen and carbon dioxide in the arterial blood, indicating the efficiency of the lungs in gas exchange.