Can you expunge twice?

Thrice. But after that, it stops, and you have to use terms like, "four times" or "five times."

To request an expungement of your STATE criminal record: You must have either been acquited or served the complete term of your sentence - then submit a petition to the court setting forth good...

Yes!

It depends on the object that's being hit. Maybe it will get twice as hard may not. It's either the same results.

weight = mass * gravity, so as long as the force of gravity is the same on both, an object with twice the mass will weigh twice as much.