What is the meaning of “power dynamics”?

Posted on by Nicholas52

I've seen this words in news article and books but have no idea what it means.
I've googled everywhere but couldn't find any answers.
Can someone elaborate what it means?
I'm guessing maybe it's used in negative situations and can occur in out daily lives like in work, relationship...
Can someone please explain?

how important it is to theorize the diverse and changing power dynamics between the different genders, races, classes, and ages of household members.

Far and away, most sexual assaults and sexual violence are perpetrated by men, and typically arise within asymmetrical power dynamics, where the perpetrator occupies a more powerful or dominant position in relation to the victim.

Thank you.