Miohippus has been classified as a browser (an animal that feeds on shrubs and trees) while merychippus has been classified as a
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Gravitational: A.is attractive only
Electromagnetic: C.attracts and repels
Both: D.has an infinite range
Explanation:
The two forces mentioned in this problem are:
- Gravitational force: this force is the force that is exerted between any object with mass. The magnitude of the force is given by
where
G is the gravitational constant
m1 and m2 are the masses of the two objects
r is the distance between the objects
This force is always attractive and it has an infinite range.
- Electromagnetic force: this is the force exerted between electrically charged objects. The magnitude of the force is given by
where
k is the Coulomb's constant
q1 and q2 are the charges of the two objects
r is the distance between them
This force is attractive when the charges have opposite sign and repulsive when they have the same sign. It also has an infinite range.
Therefore, we can conclude that:
Gravitational: A.is attractive only
Electromagnetic: C.attracts and repels
Both: D.has an infinite range
Learn more about gravitational and electromagnetic force:
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