There is no limit, but you realistically shouldn't have to take that many.
A batting cage.
no, your club can't be grounded or touch ground when you are in a hazard. I forget where this is said in the rules but it is there.
yes the golf score depends on the number of swings you take at the golf ball. A practice swing doesn't count. I would say a putt is somewhat considered a swing.
You can take as many as you want, but common sense should prevail and you really wouldn't need more than 3 or 4.
5000 lbs of sand, give or take a hundred.
gerbils take baths in sand.
I believe you are referring to the "on deck" circles. This is where the next batter up is to stand to warm up and take practice swings. ---- The circles closest to home plate are used in fielding practice and is where the coach stands to hit fungoes (ground balls and fly balls) to the fielders.
100
Lasith Malinga is the bowler to take hattrick in cricket championship in 1999.
When you are in the on deck circle, it means you are next to be at bat. Therefore you need to be ready by having your helmet on and if you need/want batting gloves they should be on too. While in the on deck circle, you should be watching the pitcher and trying to time your swings. Take a few practice swings as he or she pitches so you can be prepared when you are actually up to bat.
Yes you can