Which of the following explains why planets in our solar system are revolving around the sun? a. the gravitational pull of the sun keeps the planets in their orbits. b. the high pressure inside the sun attracts all planets towards the sun. c. the nebular mass originally exploded to throw planets around the sun. d. the high amount of energy released from the sun the planets revolve.

What is the percentage composition of carbon in the compound ch4

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.

In the lab, ammonia was mixed with water to form ammonium hydroxide. what is/are the reactant(s)? o water and ammonia o ammonia o ammonium hydroxide need