Final answer:
The subject of the question revolves around the recording of refrigerator temperatures to ensure food safety and the physics involved in refrigeration systems. Temperature monitoring is crucial for food safety to inhibit microbial growth. In physics, refrigerator efficiency is quantified using the coefficient of performance (COP), which reflects the relationship between work input and heat removal.
Step-by-step explanation:
The question "CAP requires refrigerator temperatures to be recorded?" relates to the standard practices for maintaining and recording temperatures within refrigerators to ensure food safety and inhibit bacterial growth. Refrigeration temperatures should be kept at or below 4 degrees C (40 degrees F) and freezers below -18 degrees C (0 degrees F) to prevent the growth of microbes. It is essential to monitor these temperatures, particularly during a power outage, as food may not be safe to consume if temperatures rise above these thresholds for extended periods. In the realm of physics, specifically thermodynamics, the performance of refrigeration systems is evaluated using the coefficient of performance (COP), which relates to the amount of heat removed from the inside compared to the work input required for the removal.
Physics of Refrigeration
The question concerning the minimum work required by a refrigerator at specific temperatures ("What is the minimum work required of a refrigerator if it is to extract 50 J per cycle from the inside of a freezer at -10 °C and exhaust heat to the air at 25 °C?") involves calculating the work based on the First and Second Laws of Thermodynamics and using the principles of heat transfer and the coefficient of performance of refrigeration cycles. Similarly, the question on determining the hot reservoir temperature for a refrigerator with a specified coefficient of performance ("Suppose you want to operate an ideal refrigerator with a cold temperature of -10.0°C, and you would like it to have a coefficient of performance of 7.00. What is the hot reservoir temperature for such a refrigerator?") requires an understanding of the relationship between the COP and the temperatures of the hot and cold reservoirs.
Stemming from these concepts, one can discuss the biological aspect of refrigeration — how low temperatures impact microbial growth and preservation of food or medical specimens, as illustrated by the provided information.