Question

hot object the water is continuously stirred while the hot object is immersed in it. which of the following graphs best shows the temperature changes that follow? temperature object water time temperature object water time temperature object water time temperature object water time

Explanation:

Step1: Heat transfer principle

When a hot object is immersed in water, heat is transferred from the hot object to the water. According to the law of heat transfer, the temperature of the hot object decreases and the temperature of the water increases until they reach thermal equilibrium.

Step2: Rate of heat transfer

The rate of heat transfer is not constant. At the beginning, the temperature difference between the hot object and water is large, so the rate of heat transfer is fast. As the temperature difference decreases, the rate of heat transfer slows down. So the temperature - time graph of the hot object is a curve with a decreasing slope, and the temperature - time graph of water is a curve with an increasing slope.

Answer:

The third graph (where the object's temperature curve has a decreasing slope and the water's temperature curve has an increasing slope) is the correct one.