How is a the ball served in 4-square. What is a “fault” when serving? Use a minimum of 5 sentences to describe.

Faults are allowed only once for both the server or the receiver. The server can fault if the serve into one square is too high, too low, too fast, or otherwise unreturnable by the receiver. The receiver may send the ball back to be served again.

The ideal mechanical advantage of a hydraulic lift equals the ratio of the large piston area to the small piston area.