I'm not planning to shoot any astronauts, but researching a problem for a story. Picture a rotating centrifuge in space, spun to generate artificial gravity, like so: https://media.wired.com/photos/5b33cf8f8d9ebd40cd3edeee/master/w_1600%2Cc_limit/rotatingspacecraft1.png What I want to happen is t...

When you see models of water you see something like this: The hydrogens in the water molecule become negatively charged because the oxygen pulls electrons more. So why don't they repel and move to the opposite sides of the oxygen? Or just form on opposite sides in the first place?

As we already know that acceleration is a vector quantity which means that it has both direction as well as magnitude. It can also change given any one of the two or both (magnitude and direction) changes. Yet in the High school physics textbook of mine, it explicitly states that “the direction o...

Let $A$ and $B$ be two Hermitian operators. Let $C$ be another operator such that $C = AB$. What can we say about Eigenvalues of $C$? Will they be real/imaginary/complex? What I did was to search for examples. The following were examples (in matrix representation) I looked for: $ A = \begin{bmatr...