Misc: waves 'break' when their height is how much more than the depth of the water?

Questions

in addition to the cue ball, how many balls are used in a snooker game?

how many broken clubs is a golfer allowed to replace during a round?

how many chambers are in the south african parliament that was formed in 1984?

on how many continents must a sport be played regularly before it is accepted into the olympics?

how many corners does a cube have?