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:

Demands

Demands represent the requirements or needs that individuals or groups expect to be fulfilled.

Constraints

Limitations or restrictions that affect decision-making, strategies, and the achievement of objectives.

Descriptive Research

A research method aimed at describing characteristics of a population or phenomenon being studied without influencing them.

Field Experiments

Research studies conducted in natural settings outside the laboratory to understand real-life behaviors or phenomena.