A Machine Part Consists of 0 $\mathrm { J } / \mathrm { kg } \cdot \mathrm { K }$

question 5

Multiple Choice

A machine part consists of 0.10 kg of iron (of specific heat 470 $\mathrm { J } / \mathrm { kg } \cdot \mathrm { K }$ ) and 0.16 kg of copper (of specific heat 390 $\mathrm { J } / \mathrm { Kg } \cdot \mathrm { K } )$ How much heat must be added to the gear to raise its temperature from $18 ^ { \circ } \mathrm { C } \text { to } 53 ^ { \circ } \mathrm { C } ?$

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

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Definitions:

Wheel Communication Structure

is a system of information exchange characterized by a central figure through which all communications pass, resembling the spokes of a wheel.

Centralized Communication Network

A communication structure where all decision-making and messaging are concentrated at a central point within the organization.

Freewheeling

Engaging in an activity without restrictions or a fixed plan, allowing for creativity and spontaneity.

Restricted Communication

Limitations placed on the exchange of information, often to preserve confidentiality or for the purpose of control within organizations.