Planets in our solar system do not revolve around the sun in perfect circles. Their orbits are more like ovals that scientists describe as elliptical. It is one of Kepler's laws. The sun is the focus of all the planets. The correct answer is D.
This phenomena is also called the Doppler shift. When the source of light is approaching towards an observer, the color tends to be blue shifted, but when the source is moving away or being stretch, the color tends to red shifted. In astronomy it can be use how fast galaxy is moving towards us or how fast it moves away.
add the numbers from the three sliders to determine that mass of an object
Answer:
Closest to the dog.
Explanation:
Sounds are louder the closer you are to them.
Answer:
a. when the acceleration of the objects become negative