View all 2021 Honda Civic specs. The good: The bad: The sedan has a standard 158-horsepower, 2.0-liter four-cylinder engine and an optional 174-hp, turbocharged 1.5-liter four-cylinder.

This program is useful for visualizing approximations of energy band diagrams, and performing back-of-the-envelope calculations of their important parameters. Energy bands can be modeled at varying ...