(a) The temperature of the horseshoe decreases and the temperature of the water increases.
(b) These changes take place due to the principle of calorimetry.
The principle of Calorimetry states that “When a body at a higher temperature is brought in contact with a body at a lower temperature, the hot body loses heat and the cold body gains heat.
The heat gained by a colder body is equal to the heat lost by a hotter body.
In the above case, the horseshoe is the body at a higher temperature and water is the body at a lower temperature.
So, according to the principle of calorimetry, the horseshoe will lose heat and water will gain heat.
Thus, the temperature of horseshoe decreases, and the temperature of the water increases.
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