According to the standard model of particle physics, what is the name for the three leptons that have no electric charge and little if any mass?

966

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assuming friction is negligible, if a lever has a mechanical advantage of 5, how much effort in newtons is needed to lift a 10 newton load?

937

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How does laser printer works?

987

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What are isotopes?

1142

---

Advantage of fixed pulley?

906

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Physics short answer to two significant figures, what is the index of refraction of air?

953

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All elements with an atomic number greater than what number are unstable?

1062

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What is parallel force?

974

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When a green colored object is illuminated by a green light it will appear as what color to the human eye?

939

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What is the difference between a lens and a mirror?

1097

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When gravity is the only force acting on an object the object is in what?

1104

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Which way do twin screw props on a boat rotate when propelling the boat forward?

919

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A car traveling at 30mph ( =13.4 m/s) & it slams on its brakes. ( The car is decelerated by the force of the friction 0.7..f *distance x. (Weight=mg) how far will the cargo before it stops?

872

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What does hull speed mean?

1146

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This person established the one fluid theory of electricity and performed some of the first investigations into electrical grounding and insulation:

948

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