Speed of sound (#8803)

* Create TestShiva

* Delete TestShiva

* Add speed of sound

* Update physics/speed_of_sound.py

Co-authored-by: Christian Clauss <[email protected]>

* Update physics/speed_of_sound.py

Co-authored-by: Christian Clauss <[email protected]>

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* Update speed_of_sound.py

* Update speed_of_sound.py

---------

Co-authored-by: jlhuhn <[email protected]>
Co-authored-by: Christian Clauss <[email protected]>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>