Explain three ways that objects can be discharged/neutralized.

Does work output exceed work input when a machine is used? a) yes, it does, as machines create energy. b) it depends on the type of machine used. c) no, it doesn’t, as machines are inefficient. d) no, it doesn’t, as machines cannot create energy.

What is special about a dc circuit ?

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?