Yes, it can...the same as missing any other base.
Yes, runner cannot intentionally dislodge ball from fielders glove.
Anytime a runner misses a base and an appeal is made he would be called out if the umpire saw it. Suppose only 1 runner crossed the plate, if the ball was thrown home and the catcher stepped on the plate the umpire would call him out (even if the runner is halfway back to the dugout), if multiple runners cross the plate, then and a ball is thrown home in play, the umpire will only make the "safe/out" call of the last runner to cross, or the play at the plate. In this case you would need to go through an official appeal process (ball to the pitcher on the mound, steps off the mound, throws home, catcher steps on the plate) --- The umpire will know what you are doing and if he saw it the same way, will call the runner that "missed home" out ---- If this would have been the 3rd out, his run and any runners that crossed home after him will not count
A home plate collision is usually the case of a base runner that was on one of the bases trying to reach home plate in order to score while the other team's Catcher is trying to block home plate in order to prevent the base runner from touching home plate in an effort to prevent a run from scoring and the runner and the base runner usually slides into the Catcher that is blocking home plate which is what one example of a home plate collision is.
steal of home
If appealed by the defending team the player who did not touch home, his run would not count and he would be ruled out. In the even that this runner was the 3rd out of the inning -- his run wouldn't count as well as anyone who touched home after him
Yes.
No, he could throw to home plate!
As soon as the runner touches home plate, the run scores. The following runner has the right to third base. Either the base coach or the following runner on third base should tell the runner who scored that it was not a foul ball and he should go to the dugout. The ball is still live.
On a Home Run, the runner is still required to touch all bases, even if he is entitled a run. If he misses any base, including Home Plate, and makes no attempt to return to the base to touch it, he will be declared Out and his run does not score. If other runners are also running and touch all of the bases, their runs will score. If there are two outs with runners on, only the runners who crossed the plate before his run would score.
No. That would be an obstruction and the base-runner would be safe.
Yes if a runner doesn't touch home plate and enters the dugout an Umpire can call him out the second he leaves the dirt surrounding the area of the home plate and the two batter's boxes however Major League Umpires may not opt to declare a runner out even if he missed home plate unless the opposing team appeals the call or tags the runner.
Yes.