Which contributions did johannes kepler make? check all that apply. he revived aristotle's model of the solar system. he solved ptolemy's model by proving elliptical orbits. he proved galileo's calculations were incorrect. he determined that planets move faster when closer to the sun. he discovered laws of planetary motion.

The correct answers are: Options 2,4 and, 5

2)He solved Ptolemy’s model by proving elliptical orbits.

4)He determined that planets move faster when closer to the Sun.

5)He discovered laws of planetary motion.

absorption lines are where light has been absorbed by the atom thus you see a dip in the spectrum whereas.

emission spectra have spikes in the spectra due to atoms releasing photons at those wavelengths.

explanation:

explanation:

a fuel engine ( known as a gasoline engine in american english )is an internal combustion engine with spark ignition, designed to run on petrol (gasoline) and similar volatile fuels.