State Newton's law of cooling and draw the graph showing cooling of hot water with temperature.

Explanation

### Step-by-Step Solution

**Step 1: State Newton's Law of Cooling**
Newton's law of cooling states that the rate of change of temperature of an object is directly proportional to the difference in temperature between the object and its surroundings, provided this temperature difference is small. Mathematically, it can be expressed as:

\[ \frac{dT}{dt} = -k(T - T_s) \]
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