-- If you want to ASK a Physics question . . . Click on the orange block over there =====> that says " + Ask a question". In the new window, there is a drop-down menu where you can select the category you want your question to go into.
-- If you want to SEE all the Physics questions that other people have already asked . . . . . . Click on the orange funnel up at the top, next to the "brainly.com" . . . . This will open a screen full of all the questions that have been asked in EVERY category ... all the questions on the site. . . . At the top of the blue part of the screen, there's a strip that says "All Subjects". When you click in there, you get a list of categories. You can click on the one you're interested in, and the screen changes to only show questions in the subject you picked.
