No.
when you are hitting a ball,and you hit the net or hit it out of bounds that is called a hitting error.
Yes it is legal to throw a ball over the defenders head
That is legal, as long as your hand only touches the top hemisphere of the ball.
No, that is called a setter dump
No, it is not in play. That is called a "Let Ball", the server does not receive a penalty and reserves.
No but they are still there for you
even if the smallest bit of the ball crosses over the edge of the plate, it is to be called a strike as long as it is still within the strike zone
The ball can be snapped under the legs or the center can do a legal snap called a side snap. This is where the center picks up the ball, turns around, and hands it to the quarterback
There are no serving boxes in volleyball but if the ball hits the net and still lands within the court the ball is still in play and is considered a good serve.You may have your sports mixed up though, in tennis there are serving boxes and if the ball skims the net and still lands in it is called a "let" and this means the stroke must be replayed.
If the ball hits the net on a serve and it still goes over and lands on the other side of the service box then it is called a "let". If the ball its the net and does not go over, or into the service box then it called a "vault". The worst thing a player can do is double vault, which means they missed the service box twice in a row.
The ball is still technically in. According to the rules of volleyball, if it hits the net and goes over, it is still in.
Untouched