5. Increase the frequency to around 500 Hz. Again, drag the person's head up and down so
that you can hear what they are hearing. How does the frequency of the loud and silent
regions change as the frequency of the sound changes?

If you mix chlorine lithium and nickel together which two elements would be the most reactive

Anne applies a force on a toy car and makes it move forward. what can be said about the forces acting on the toy car at the moment anne applies the force?

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.