If the system were lossing heat according to Newton's cooling law the temperature of the mixture would change with time according to (while heater was on) .

Options

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Explanation

To solve the problem regarding how the temperature of a mixture changes with time according to Newton's cooling law while a heater is on, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Newton's Cooling Law**:
Newton's cooling law states that the rate of heat loss of a body is directly proportional to the difference in temperature between the body and its surroundings, provided this temperature difference is small. Mathematically, it can be expressed as:
\[
\frac{dT}{dt} = -k(T - T_{ambient})
...