If there is a potential difference V between the metal and the detector, what is the minimum energy Emin that an electron must have so that it will reach the detector

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.

The force it would take to accelerate an 900-kg car at the rate of 6m/s2

Which of the following list the divisions of the geologic time scale in order from longest to shortest