Final answer:
The type of liquid is relevant in Newton's law of cooling.
Step-by-step explanation:
The statement that "in the original Newton's law of cooling the type of liquid is utterly irrelevant" is false.
Newton's law of cooling states that the rate of heat transfer between an object and its surroundings is directly proportional to the temperature difference between them. The law is based on the assumption that the cooling process occurs in a homogeneous medium, such as air or water. Therefore, the type of liquid does matter in the context of Newton's law of cooling.
For example, if you have a hot cup of tea and a hot cup of coffee at the same initial temperature, the tea will cool faster than the coffee because water has a higher thermal conductivity than coffee. So, the type of liquid affects how quickly an object cools down according to the law.
Learn more about Newton's law of cooling