Cooling Process of Aluminum Cylinder and Water Jug

Which object is cooler after being placed in the refrigerator and why?

Given a 1 kg cylinder of aluminum and a 1 kg jug of water placed in a refrigerator at room temperature for one hour, which object is cooler and what is the reason behind it?

The water jug is cooler than the aluminum cylinder.

The reason behind this is that water has a higher specific heat capacity than aluminum.

Specific heat capacity is the amount of energy required to raise the temperature of a substance by 1°C. Water has a higher specific heat capacity than aluminum, which means it requires more energy to raise the temperature of water than aluminum.

Water takes longer to cool down compared to aluminum. Therefore, water loses heat at a slower rate than aluminum, resulting in the water jug being cooler than the aluminum cylinder.

Since water has a higher specific heat capacity, it will take longer for the water to cool down than it will for the aluminum cylinder. As a result, after one hour in the refrigerator, the jug of water will be cooler than the aluminum cylinder.

Water being a better coolant than aluminum is due to its higher specific heat capacity. This property causes water to cool down more slowly compared to aluminum, making the jug of water cooler than the aluminum cylinder in a cooling process.