A lever is used to lift up a 100N weight. The fulcrum is 10cm from the weight. If the effort force is applied at a distance of 50cm from the fulcrum, what is the effort force required to lift the 100N weight?

A) O N

B) 20 N

C) 50 N

D) 100 N

What does this equation mean FeDe=FrDr

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Complete this equation that represents the process of nuclear fission. Superscript 239 Subscript 94 Baseline P u + Superscript 1 Subscript 0 Baseline n yields Superscript A Subscript B Baseline B a + Superscript 91 Subscript 38 Baseline S r + 3

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All objects are attracted to each other by the force of

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