If a photon of light leaves the sun than reachers the earth 494 second later. what is the distance from the earth to sun

Speed of light = 3 x 10⁸ m/s

Time to make the trip = 494 sec

Distance = (speed) x (time)

Distance = (3 x 10⁸ m/s) x (494 s)

Distance = 1,482 x 10⁸ meters

Distance = 1.482 x 10¹¹  meters

Distance = 1.482 x 10⁸  kilometers

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.