The Thermal Conductivity of Copper Is 397 J/s⋅m⋅°C and of Silver

question 55

Multiple Choice

The thermal conductivity of copper is 397 J/s⋅m⋅°C and of silver is 427 J/s⋅m⋅°C.A rod of each material is used as a heat conductor.If the rods have the same geometry and are used between the same temperature differences for the same time interval,what is the ratio of the heat transferred by copper to the heat transferred by the silver?

• A)0.930
• B)1.395
• C)2.093
• D)0.465
• E)0.791

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Definitions:

Job Order Cost System

An accounting system that accumulates costs by individual jobs when the products or services are distinguishable from each other.

Time Tickets

Documents or electronic records used to track the amount of time an employee spends on a specific job or project.

Job Cost Sheets

Documents that track the direct materials, direct labor, and manufacturing overhead for a specific job, used in job costing systems.

Direct Labor

Costs associated with the labor directly involved in the production of goods or services.