Under most rules, no.
No
For guys lacrosse, the ball cannot be below the sidewall at the very bottom. If it is, its illegal. So the head itself has a sidewall, and the lowest point on it is where the ball cannot below (depth-wise). Also, is you hold your stick straight up with a ball in it, and keep tilting is so the pocket would be upside down and the ball doesn't come out when its upside down, it's illegal. And if you put a ball in your pocket and tilt it so the scoop is parallel with the ground (about a 90 degree angle if touching the ground) and the ball doesn't come out then it's illegal. Also, you cannot have any rips in the mesh.
The Q-ball has metal inside it and the other balls don't so as the Q-ball goes down a pocket to be returned a thick strip of magnet keeps it from following the other balls. It is NOT bigger than the other balls.
No they don't come with scratch resistant lenses.
With the exception of the older lever actuated ball returns and coin operated tables, there are no moving parts for a ball return. The balls drop by gravity and when they fail to come through, it is typically because something fell inside a pocket, often this is a piece of pool chalk. The foreign item needs to be removed and the ball return will work. Rolling balls through the proper pocket can often clear the chalk - if not, it needs to be disassembled.
Umm, maybe in my pocket? Hell yeah Moses come from my pocket!
Governor
A few minerals that do not scratch glass come to mind . . . talc, asbestos, mica, for instance.
It's their way of saying, come on scratch me some more.
Pocket Monsters
No, you do not lose. When you scratch on the break, your opponent has ball in hand behind the head string. == If a player scratches on a legal break shot, (1) all balls pocketed remain pocketed (exception, the 8-ball: see rule 4.8), (2) it is a foul, (3) the table is open. Please Note: The incoming player has cue ball in hand behind the head string and may not shoot an object ball that is behind the head string, unless he first shoots the cue ball past the head string and causes the cue ball to come back behind the head string and hit the object ball."
This is an English expression which means to achieve the required standard There are several proposed origins of this idiom. There is the inspection mark that a master would scratch or stamp into a workpiece meanng, if the piece was of sufficient quality, it had come up to scratch. However, predating that explanation is the golfing handicap term. A player who has no handicap is a scratch golfer. A player of lesser quality, who uses the handicap system to be under par if you will, has (does) not come up to scratch.
No, but a flake of mica will probably come off(unless you scratch it really lightly).