A small child is pulling you in a wagon but quickly gets tired and asks you to pull him in the wagon instead. Which statement is true after you switch places?

the entire statement is true and correct.  

there's no diagram, nothing is illustrated, and no question is asked.

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.