The box is pulled horizontally across the floor by a force of 100 N
and opposed by a frictional force of
60 N. The object accelerates at 4
m/s2
a
>

I don't you know huh yeah

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.