Question

The Sankey diagram below shows the energy transfers in a computer. Arrow C shows the energy wasted in sound. Arrow B also shows wasted energy. How is this energy transferred from the computer's energy stores?

Answer 1

Answer:

A large amount of energy denoted by the thick arrow A is transferred in a useful form and stored in the computer.

Explanation:

• If we want to observe the amount of energy that is transferred into non-useful and useful forms, Sankey diagrams are used.
• A large amount of energy transferred is denoted by a thick arrow.

In this Sankey diagram, $100$ $J$ energy is the input energy. The arrow C which shows the energy wasted in sound is the thinnest, so the energy wasted in sound is the least. Arrow B shows wasted energy and its value is more than the energy wasted in sound. The horizontal arrow A is the thickest and it defines the useful energy.

So, a large amount of energy denoted by the thick arrow A is transferred in a useful form and stored in the computer.