Are steps in cycles always short or long?

You have to see a doctor for that. One thing you can do to become regular and bleed less and for shorter time is to get on the birth control pill.

divide, multiply, subtract,compare

The a in "have" is short, but the syllable is long because it ends in a voiced consonant.

Shorter than 10 minutes.

They are different lengths (and energies) of .22 rimfire cartridges. They are the most commonly sold cartridge in the world.