Question

A group of students performed an experiment to prove the law of conservation of energy. In the experiment, a flask containing water at room temperature was shaken vigorously for a few minutes. The table shows a partial record of the temperature of the water before and after shaking.

Experimental Record
Temperature
Before Shaking 21 °C
After Shaking Unknown


What best predicts the unknown temperature?

Answer 1

Its going to be greater than 21°

Step-by-step explanation:

the energy used for shaking raises the kinetic energy of the water molecules

Answer 2

The answer is 22 degrees. Law of conservation of energy stipulates that energy cannot be created or destroyed but can be transferred and also transformed from one form to another. The movement of the container, mechanical energy, was transferred to the water, as heat energy, and therefore raised the water temperatures slightly.