One Kilogram of Chilled Water at 32°F (0°C) Is Placed

question 50

Multiple Choice

One kilogram of chilled water at 32°F (0°C) is placed in a freezer which is kept at 0°F (−18°C) . Approximately how much electric energy (in kilocalories) is needed to operate the compressor to cool this water to 0°F if the room temperature is maintained at 75°F (24°C) ? (L_ice = 3.33 × 10⁵ J/kg; c_ice = 2.09 × 10³ J/kg⋅°C)

• A) 13
• B) 1.5
• C) 15
• D) 16
• E) 33

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Definitions:

Aptitude Tests

Standardized tests designed to measure an individual's potential to perform certain tasks or learn particular skills.

Ability to Learn

The capacity of individuals to acquire knowledge, understand through experience, practice, study, or instruction, and improve skills over time.

WAIS

The Wechsler Adult Intelligence Scale, a commonly used test designed to measure human intelligence through various cognitive tasks.

David Wechsler

A psychologist known for developing influential intelligence scales, such as the Wechsler Adult Intelligence Scale (WAIS).