Draw a sankey diagram, for a hydroelectric dam, from reservoir to home, and for a wind turbine, from blades to home?

Answer 1

This is not a solution but a pointer as how to make a Sankey diagram.

In the First box write the source of energy.
Write Energy wasted, if available, against the yellow arrow in the box. In front of arrow mention reason of loss.
Write the energy to which first box energy gets converted to.
Proceed with each step.
The energy can be Potential energy, Kinetic energy, Electrical Energy.
The losses can be attributed to evaporation, heat, friction, conversion efficiency, transmission

The figure shown is a three step energy conversion daigram. It could be of more than or less than four steps.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.