The Following Diagram Shows The Path Of A Planet Around The Sun Kepler Discovered That

A changes in the orbital velocity of the earth b tilting of the earths axis c the oblate spheroid shape of the earth d the phases of the moon 73the elliptical shape of the earths orbit results in a a b b c c d d 74the diagram below shows four positions of a planet in its orbit around the sun. Which of the following can be determined by studying the spectrum of a star.

13 5 Kepler S Laws Of Planetary Motion University Physics

If the star is moving away from earth it will have a higher number.

The following diagram shows the path of a planet around the sun kepler discovered that. The chemicals in the atmosphere of the star the motion of the star the temperature of the atmosphere of the star. N 650 nanometers nm. This is usually referred to as the period of an orbit.

The first law states that the orbit of a planet about the sun is an ellipse with the sun at one focus. The electrons in surface atoms of a star require the input of energy in order to move from the ground state. Keplers work led him to one more important discovery about the distances of planets.

This means that when planets are near the sun in their orbit they move faster than when they are further away. These rules are now known as keplers laws. When looking for a doppler effect in a spectrum astronomers look for a change in the position of this band.

The second law is also known as the law of equal areas and states that a line joining a planet and the sun sweeps out equal areas in equal time periods. So the planet must be moving faster between c and d than it is between a and b. If it is moving towards earth it will have a lower number.

Kepler noted that the closer a planet was to the sun the faster it orbited the sun. Kepler had all of tychos data on the planets so he was able to determine how long each planet took to complete one orbit around the sun.

Planetary Motion The History Of An Idea That Launched The