What is x and y using trigonometry? make sure to put how you solved it

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.

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

What happens to an isotope during radioactive decay?