For an object to escape from the surface of a celestial body, the kinetic energy of the object must be: __________?

A. Less than the gravitational potential energy of the body B. Equal to the gravitational potential energy of the body C. Greater than the gravitational potential energy of the body D. None of the above The correct answer to the question: “For an object to escape from the surface of a celestial body, the kinetic … Read more

How many layers does sun have ?

A. 6 B. 4 C. 7 D. 3 The Sun is made up of three inner layers and three outer layers, six layers in total. The layers are the core, the radiative zone, the convective zone, the photosphere, the chromosphere, and the corona. The correct answer to the question: “How many layers does sun have … Read more