Sound waves move through some liquid at a speed of 1500 m/s. if the wavelength is 3 m, what is the frequency of the wave? 1503 hz 4500 hz 0.002 hz 500 hz

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.