Rank the boxes on the basis of the magnitude of the normal force acting on them.

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.

Anybody wanna ? (picture included? )

What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery