#12 You are pushing a sofa across the floor. You exert a force of 5N to the west. There is a frictional force exerted 2N to the east. What is the net force?

are there answer choices to this question? this seems like a question where you have options to choose from.

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.

answergravity;