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Did Copernicus add planets to the geocentric model?
No. He only came with the idea of a heliocentric model. (Sun-centred) He also stated that the Earth orbited around it.
How did Newtons work on orbits add to the work Kepler had done?
Newton's work on orbits built upon Kepler's laws by providing a theoretical explanation for why planets follow elliptical paths around the Sun. Newton's laws of motion and law of universal gravitation helped to show that these elliptical orbits were a consequence of a gravitational force between the planets and the Sun, providing a deeper understanding of the underlying mechanics of planetary motion.
Contribution of Copernicus?
Copernicus provided a groundbreaking heliocentric model of the universe, shifting from the Earth-centric view to the Sun at the center of the solar system. His work laid the foundation for modern astronomy and greatly influenced scientific thought during the Scientific Revolution. Copernicus's contributions challenged traditional beliefs and paved the way for a more accurate understanding of the cosmos.
What idea did Rutherford add to the atomic theory?
the idea behind rutherfords atomic theory is that the atom has a central positive nucleus and negatively charged electrons, which move in orbits, surround it. most of the atom is made up of empty space. he assumed this theory through a gold-foil experiment about which you can find information on the internet.
Will the results always be identical if you mix the same ingredients in exactly the same proportions every time?
If everything is exactly the same (including Temperature, Purity of the Reagents, etc.) you will get the same results. This is called Experimental Reproducibility. BUT, I must add that, 'in theory, theory works.' Just 2 iterations of the experiment, is not enough to 'prove' a theory. Carefully analyze your results.
