A pendulum makes 10 swings every 15 seconds on Earth. You take the same pendulum to the surface of a different planet and you notice that the pendulum makes 15 swings in 15 seconds. Which of the following could be true? (Select two right answers) 1. The mass of the planet is larger than Earth 2. The mass of the planet is smaller than Earth 3. The radius of the planet is larger than Earth 4. The radius of the planet is smaller than Earth

1. The diameter of the Sun is equal to 1.392*10^9 m, and the distance from the Sun to Saturnis equal to 9.5 AU. Suppose you want to build an exact scale model of the solar system,and you are using a volleyball with average diameter of 21 cm to represent the Sun. a) In your scale model, how far away would Saturn be from the Sun? Give your answer inmeters.b) The actual diameter of Saturn is 116,460 km. What would be Saturn’s diameter in yourscale model? Give your answer in centimeters.

Which of the following is true in our solar system?  1. The planets travel in a circular path, with the sun being in the very center.  2. The planets travel in an elliptical path, with the sun being in the very center.  3. The planets travel in an elliptical path, with the sun at one of the focus points.  4. The planets travel in a helical path, with the sun located along the central axis.

A synchronous satellite, which always remains above the same point on a planet's equator, is put in circular orbit around Mars so that scientists can study a surface feature. Mars rotates once every 24.6 h. Use the data of this table to find the altitude of the satellite. ___Km