A 1500 W Portable Heater Is Needed to Replace the Heat

question 52

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.What is the temperature outside?

• A) -3\(^{\circ}\)C
• B) -16\(^{\circ}\)C
• C) 16\(^{\circ}\)C
• D) 11\(^{\circ}\)C

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Definitions:

Diminished Energy

A reduction in one's normal level of vitality or strength, often described in medical contexts as fatigue or lethargy.

Low-pitched

Sound that is deep or rich in tone, indicating a frequency at the lower end of the audible spectrum.

Cardiovascular Sounds

The sounds made by the heart and blood within the arteries and veins, often assessed for diagnosing heart conditions.

Trigeminal

Pertaining to the trigeminal nerve, the fifth cranial nerve responsible for sensation in the face and motor functions such as biting and chewing.