I don't get it. How can absolutely nobody be able to answer any of my physics questions?
It's been sitting there for a couple of hours now and there's is not a single answer.

Need more information like a picture

Perhaps seek some professional ? it isn't very asking some children who are just trying to find out answers to homework.also, it seems professional would actually be good to you. obviously it isn't going to magically fix your depression, but it'll do something. drugs, smoking weed, it won't do much, especially if your husband is against it. if you do it he'll dislike it. but talk to him, try and get him to listen to you, and figure everything out together, okay? there's a website- maybe it can offer some ?

How are period and frequency related to each other? dperiod is the reciprocal of frequency.