In July 1994 the comet shoemaker-Levy 9 collided with the planet jupiter ,as a scientists had predicted. To be able to accurately Predict when a comet will collide with a planet, it is essential to understand

a longitudinal wave moves energy that is to the direction of the wave’s movement. - true

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.

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it