This distance from the Earth to the Sun given above is a standard for measuring other distances in the solar system and is called an Astronomical Unit or AU. 1AU=miles. Write this as a ratio:

b.a device that inputs heat into a cool object

i think it's 35 meters

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.