Batteries and generators are examples of voltage sources which create a potential differences in a circuit? true or false

What is the fate of the electrons that interact with a specimen in an electron microscope?

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.

Acar travels in reverse. it covers 150 meters in 12 seconds what is the velocity of the car what is the speed of the car