A 1500 W Portable Heater Is Needed to Replace the Heat

question 25

Multiple Choice

A 1500 W portable heater is needed to replace the heat lost through a circular window (radius 25 cm) in the wall of a home that is made of a single pane of glass 0.30 cm thick.Thermal conductivity for the glass is 0.63 W/mK.The temperature inside the house is 20 $^{\circ}$ C and outside is -12 $^{\circ}$ C.What is the thickness of the window?

• A) 0.84 mm
• B) 4.2 mm
• C) 2.6 mm
• D) 0.66 mm

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Definitions:

Balance Theory

A psychological theory suggesting that people prefer harmony and consistency in their relationships, values, and beliefs, and will change or eliminate attitudes or relationships that are discordant.

Attitude-Behavior Relationship

The link between an individual's beliefs, feelings, and predispositions towards objects or concepts and their consequent actions or behaviors.

Online Reasoning Skills

The ability to critically evaluate information, identify credible sources, and make informed decisions in the digital environment.

Vertical Structure

An organizational structure where hierarchy and rank order define how communication, power, and responsibilities are distributed, typically in a top-down manner.