Answer:
According to Marley's assumption that the temperature of the substance changed at a constant rate, we can use linear interpolation to determine the time at which the temperature of the substance was 1.3°C.
To do this, we need to know the initial temperature of the substance and the rate at which it was changing. Unfortunately, these details are not provided in the question. Without this information, we cannot accurately determine the time at which the temperature was 1.3°C.
However, if we assume that the temperature was initially 0°C and the rate of change was constant, we can proceed with the calculations.
Let's say the substance was placed in the freezer for a duration of 10 minutes. We can divide this time period into equal intervals and calculate the change in temperature for each interval.
For example, if the substance started at 0°C and the rate of change was 0.1°C per minute, after 5 minutes in the freezer, the temperature would have decreased by (0.1°C/minute * 5 minutes) = 0.5°C.
So, after 5 minutes, the temperature of the substance would be (0°C - 0.5°C) = -0.5°C.
We can continue this process to calculate the temperature at different time intervals. If we find a time interval where the temperature is closest to 1.3°C, we can estimate the time at which the substance would have reached that temperature.
However, it is important to note that this calculation is based on the assumption that the initial temperature and the rate of change were known. Without these details, we cannot accurately determine the time at which the temperature was 1.3°C.
Explanation:
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