To evaluate the statements regarding the gravitational force between Earth and Titan, we need to consider the masses and distances involved.
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There is no gravitational force between Earth and Titan.
- This statement is false. There is a gravitational force between any two masses, including Earth and Titan.
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The gravitational force between Earth and Titan is less than that between Saturn and Titan.
- This statement is true. Saturn is much more massive than Earth, and Titan is a moon of Saturn, so the gravitational force that Saturn exerts on Titan is greater than that which Earth exerts on Titan.
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The gravitational force between Earth and Titan is more than that between Earth and Saturn.
- This statement is false. The gravitational force between Earth and Titan is less than the gravitational force between Earth and Saturn since Saturn's mass is much greater than Titan's.
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The gravitational force between Earth and Titan is less than that between Earth and Pluto.
- This statement is generally false. Although Pluto is not as massive as Saturn, it is considerably massive compared to Titan. Moreover, the relative distances between Earth and Pluto versus Earth and Titan also play a significant role, and given the vast distances to Pluto, this could potentially be less than the force between Earth and Titan, depending on the position of both planets.
The correct answer is: The gravitational force between Earth and Titan is less than that between Saturn and Titan.