Yes, silencers are legal in Nevada (assuming they are correctly registered with the ATF)
Silencers are not legal in the state of Iowa. Currently there are 39 out of 50 states that individuals, trusts and corporations can legally own silencers.
No. They trap and slow the release of gasses after the gun fires.
No
Typically steel or aluminum
According to what I found (a cursory search on the internet) silencers are legal in Kansas as of sometime in 2007 or 2008. Silencers are still regulated by federal law. To purchase one legally, you must go through a class 3 dealer.
Suppressors are legal, yes.
Silencers (also known as suppressors) are regulated by the Federal government under the 1934 Gun Control Act. Ownership by a private citizen is prohibited by State law in California, Minnesota, Iowa, Illinois, New York, New Jersey, Vermont, Massachusetts, Delaware, and Hawaii. Possession in states not named is permitted, so long as the silencer is registered with the Federal BATFE, and the $200 transfer tax paid.
Yes. Must be registered with the Federal BATF, but state legal.
Basically any gun can have a silencer. Silencers don't work as well on revolvers, but any gun can be threaded for one.
there was yo-yos dolls jumpropes gun silencers and the vaccum cleaner
You can purchase a suppressor or silencer for your gun online through websites such as the Silencer Shop and GEMTECH. Be careful however as removable silencers or suppressors are prohibited in 16 states in the USA.