Best Answer: Today, the national average for the diamonds chosen for engagement rings with regard to carat weight is 0.38 carats. In general, the carat weight averages of engagement ring diamonds are increasing.
Now have you ever wondered what is up with tennis players and the noises they make when hitting the ball back and forth. Well, they have every right to make these noises. Venus Williams served the world's fastest tennis ball among women which was clocked at 56.95 m/s (127.4 mph). That's twice the speed limit on a regular highway in New York City. Tilden holds the title of World's fastest tennis ball served among men with a speed of 73.14 m/s (163.6 mph).
The International Tennis Federationhas five different categories (simply marked category 1,2 and so on) that classify surfaces speeds, with â1â being the slowest and â5â being the fastest. Clay courts are made of crushed shale, stone or brick and typically produce a slow pace and bounce. The French Open is notorious for their use of this particular court style. Grass courts, which are made of naturally grown grass which is then mowed down or AstroTurf, are the fastest type of court. Wimbledon has always been played on a grass courts. Hard courts are very common and are made out of various materials including; acrylic, asphalt and concrete.