Acar drives 215 km east and then 45 km north. what is the magnitude of the car’s displacement? round your answer to the nearest whole number.

more than, less

less than, more

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.