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### 23 Cards in this Set

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• Back
 lever Le/Lr fixed pulley alwayssssss 1 moved pulley # of ropes wheel and axle r of big wheel _______________ r of smaller wheel gears teeth of big wheel ________________ teeth of small wheel screw how close threads are wedge l __ h hydrualic press r of bigger piston _________________ r of smaller piston inclined plane l ___ h machines change direction and/or force Fr= what machine does ((resistance force)) Fe= force that you apply to the machine ((effort force)) Work input= Fe x De Work output Fr x Dr ma= Fr/Fe efficiency= work coming out _____________ work coming in power w __ t ((((((Watttttts)))) 4 states of matter solid liquid gas plasma 1)all matter is made of particles that are in constant motion 2) speed and arangement determines state of matter kenetic theory amorphous solids without crystals thermal expansion most matter expands when heated, molecules move faster, contract when cooled Hf ((heat of fusion)) to heat, you add a gram of solid to make it melt Hv((heat of evaporation)) heat, you add to water to boil