to check if a Basketball or any ball is inflated properly, the referee must bounce the ball on the floor to see if it comes back up to a appropriate height for the players. :)
No foreign substance is allowed on the ball. The referee certifies the ball for game play. As a referee I would require the ball to be cleaned of mold or I would not allow it for game play.
The type of air that keeps a beach ball inflated is kinetic energy.
An NFL size football is inflated to 7-9 lbs that's all i know. Update: Actually, a correctly inflated ball is filled with air to a pressure of 12.5-13.5 psi.
The best food to eat before a basketball game is soul food
The material must influence the bounce of a ball: consider an inflated rubber ball versus an inflated aluminum ball. The difference might have to do with the elasticity of the material.
If it is a solid rubber ball it is not inflated. A hollow ball can be inflated. The more pressure inside, the "harder" the ball will be and the higher it will bounce. To much pressure and you risk rupturing the "rubber" bladder.
Gas particles travel from an area of higher pressure to lower pressure when air leaks out of an inflated ball.
A trick to taking out the wrinkles from a soccer ball that has not been inflated for a while is to let some air out of the ball. Then, air the ball up again while heating the ball with a hair dryer.
I can give you several sentences.He is going to referee the ball game.The referee blew his whistle for half time.They fought for half an hour with no referee.
The referee's whistle.
The ball is the responsibility of the referee.