When you divide miles by hours, you are calculating?

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

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.

Does anyone have the answers to online physics course plato course physics, semester a v3.0