Physics High School

A planet moves in an elliptical orbit around a star, as shown in the diagram. Which of the following is true as the planet moves from position 1 to position 2?
А.The planet loses kinetic energy due to negative gravitational work; thus, the total energy in the planet-star system decreases.
B.The planet's kinetic energy increases due to positive gravitational work; thus, the total energy in the planet-star system increases.
C.Kinetic energy decreases and gravitational potential energy increases, but the total energy in the planet-star system stays constant.
D.Potential energy decreases and kinetic energy increases, but the total energy in the planet-star system stays constant.

Answers

Answer 1

Kinetic energy decreases and gravitational potential energy increases when the planet moves from position 1 to position 2, but the total energy in the planet-star system stays constant. Hence, option (C) is correct.

What is  planetary system?

A group of non-stellar objects in or out of orbit around a star or star system that are gravitationally bonded together is known as a planetary system.

In general, planetary systems consist of one or more planets, though they can also include other objects such dwarf planets, asteroids, natural satellites, meteoroids, comets, planetesimals, and circumstellar discs.

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A Planet Moves In An Elliptical Orbit Around A Star, As Shown In The Diagram. Which Of The Following

Related Questions

What are the elements of realism?

Answers

Realism is characterised by its emphasis on social issues, common difficulties, life's realities, and largely middle- and lower-class people.

What does the word "realism" really mean?

1. A propensity to be realistic and practical rather than creative or visionary 2. depicting people and things in literature and art in their true, non-idealized state. likewise see naturalism.

In books, what does realism mean?

A literary genre known as realism depicts typical day-to-day events as they actually take place in reality. This frequently concentrates on persons from the middle and lower classes and on well-known locations.

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