Eminem is a Famous Rapper
The statement "The bigger they are, the harder they fall" is a rational appeal because it is an idiom that cannot be proved by hard evidences; it is just a proverb.
The fact that drunk drivers become the victims of more than 50 % of traffic deaths looks like hard evidence, because probably there is a statistics that proves it.
It was found out that DNA tests of skin discovered under the victim's fingernails suggest that the defendant was responsible for the assault. It is a rational appeal that is proved by a scientific fact.
According to the results of psychological test, computer games cannot be the reason for teenage violence. It is a rational appeal because it is just a suggestion, not a tendency.
It was found out that honey attracts more flies than vinegar. It is a rational appeal that is based on assumptions.
Historical precedents demonstrate that cutting tax rates usually increases tax revenues, because people work harder when they can save more of what they earn. It is hard evidence based on the historical fact.
The statement "We have nothing to fear but fear itself” is a rational appeal that bases on a psychological vision of issue.
It was stated that air bags should not be used in vehicles because they can lead to death of young children and small-framed adults. It is hard evidence that can be proved by statistics.