Final answer:
The subject of this question is Physics and it involves the topic of thermal expansion. The student needs to calculate the length of a thermal tap consisting of a silica rod and an aluminum tube after it is cooled down to the initial temperature. The result will depend on the coefficients of linear expansion of the rod and tube.
Step-by-step explanation:
The subject of this question is Physics and it pertains to thermal expansion. The student is given information about a thermal tap consisting of a silica rod and an aluminum tube. The internal diameter of the tube changes when the temperature is raised, and the task is to find the length of the rod after it is cooled back down to the initial temperature.
Using the equation for linear thermal expansion, the change in length can be calculated by multiplying the initial length, the coefficient of linear expansion, and the change in temperature. The result can then be used as the new initial length to calculate the length after cooling down to the initial temperature.
The result may or may not be 1 meter, depending on the specific values provided in the question. The student should account for the different coefficients of linear expansion for the silica rod and the aluminum tube in their calculations