Which of the following statements is true or false? The angular speed around the

Question

Which of the following statements is true or false? The angular speed around the sun is smaller for Saturn than it is for Mars. The orbital speed around the sun is smaller for Mars than it is for Saturn. A satellite can maintain a stable orbit in a plane not passing through the center of the earth. If a planet of given density were made smaller, (without changing its density), its force of attraction for an object on its surface would decrease. Consider a rocket engine which provides a constant acceleration. The engine-on time required to escape from the earth is larger than the engine-on time required to escape the moon. As measured by an observer on earth, there is no difference in the periods of two satellites, each in the same circular orbit in the equatorial plane around the earth, but one moving eastward and the other westward. The rotation period around the sun is larger for Mars than it is for Saturn.

Explanation / Answer

The angular speed around the sun is smaller for Saturn than it is for Mars. (TRUE)

The orbital speed around the sun is smaller for Mars than it is for Saturn. FALSE

Mars - 24.077 km/s

saturn - 9.69 km/s

A satellite can maintain a stable orbit in a plane not passing through the center of the earth.  FALSE

If a planet of given density were made larger, (without changing its density), its force of attraction for an object on its surface would decrease. FALSE because force of attraction is inversily proportional to distance between the mass

Consider a rocket engine which provides a constant acceleration. The engine-on time required to escape from the earth is larger than the engine-on time required to escape the moon.---FALSE

As measured by an observer on earth, there is no difference in the periods of two satellites, each in the same circular orbit in the equatorial plane around the earth, but one moving eastward and the other westward. TRUE

The rotation period around the sun is larger for Mars than it is for Saturn. TRUE

Mars - 24 hr 37 min 22.66 sec

Saturn - 10 hr 32 min 35 s

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