Question

A tea kettle is warmed on an electric stove. After a while, water vapor builds inside the kettle and causes a whistle in the lid to make a sound. How does this demonstrate the first law of thermodynamics?

Answer 1

Since the first law says energy cannot be created or destroyed, it is a great demonstration of the heat energy being used to convert the liquid inside the kettle into a gas. The matter and energy are both converted, but nothing is destroyed or created.

Answer 2

The first law of thermodynamics states that the change in the internal energy of a system equals the net heat transfer into the system minus the net work done by the system. This is another way of saying that energy can neither be created nor destroyed, but it can be converted from one form to another form.

A tea kettle that is warmed on an electric stove is receiving heat energy, this heat energy increases the kinetic energy of the water particles in the kettle and makes them to move faster. As time goes on, the water begins to turn into vapors. The heat energy that is released into the system is been used to carry out the work of evaporation and the whistling of the kettle.

Step-by-step explanation:

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