When light rays they can be projected on a screen

What challenges did you encounter during the circuit training program?

What is the magnitude of the resultant vector round your answer to the nearest tenth

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.