What situations in classical physics are non-deterministic?

Are there individual protons and neutrons in a nucleus?

How many photons are received per bit transmitted from Voyager 1?

Can tin foil hats block anything? (2015)

Why does holding a key fob to your head increase its range?

Why is a second equal to the duration of 9,192,631,770 of radiations? (2016)

Can a tea light heat a greenhouse?

What is an “attosecond pulse”, and what can you use it for?

Why did these algae grow like this in the pool?

Lev Landau's “Theoretical Minimum”

Why is my dryer radioactive?

What are the demographics of stars visible to the naked eye?

A wave function does not collapse upon detection?

Do rainbows have ultraviolet bands and infrared bands? (Yes)

Computing the mass of a coin based on the sound it makes when it falls