What does the word "just" mean in the below questions?

Could you just turn towards the camera?
Can I just borrow your phone?
Can I just get your attention for one minute?
Can you just open the door?

See a translation

@moalinemati

For the first one, just is implying that the person isn’t being cooperative about facing the camera.

For the second, just is implying that the requestor doesn’t want anything else.

For the third, just implies that the requestor has been trying to get attention and the person is being difficult or rarely provides it.

For the fourth, just implies that the requestor wants nothing more than the door to be opened, probably because they desperately want to leave.

Overall “just” is being used here to show exasperation, frustration or demand for expedience.