A Machine Gear Consists of 0

question 44

Multiple Choice

A machine gear consists of 0.14 kg of iron and 0.19 kg of copper.How much total heat is generated in the part if its temperature increases by 35.0 C°? (Specific heats of iron and copper are 450 and 390 J/kg⋅°C,respectively. )

• A)4.5E+3 J
• B)4.8E+3 J
• C)5.2E+3 J
• D)2.2E+3 J
• E)2.6E+3 J

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Definitions:

Inflation

How rapidly the across-the-board prices of goods and services increase, impairing fiscal buying ability.

Unemployment

Unemployment occurs when individuals who are capable of working and are looking for a job are unable to find employment. It is a key economic indicator.

Money Neutral

The principle that changes in the money supply only affect nominal variables and not real variables like output in the long run.

Favorable Supply Shock

An unexpected event that increases the supply of a product or service, leading to lower prices and benefiting consumers.