My physics undergrad had about equal parts Mathematica (for theoretical subjects), MATLAB (for engineering crossover), Python (for CS), and Excel (for labs).

That too, but many aren't firm with such tools and Excel is very prominently used. They often employ special software (I mostly worked with them on optical systems) that use Excel as a common output format for visualization. Don't know the name of their simulators.

And / or Jupyter Notebook