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Eureka!

2 الموسم
30 حلقة

Eureka! - Season 2 Episode 2 الحلقة 2


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5 الدقائق 1981 HD

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A teeter-totter is the perfect demonstration of the lever, particularly if you are trying to ride a teeter-totter with someone heavier than you. Such is the Principle of the Lever.

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