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73 Cards in this Set

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 mass number mass of protons, neutrons, electrons isotopes same number of protons , different number of neutrons familes columns period horizontal rows valence electrons outer electrons phase changes bonds between particles being broken of formed, energy do not go into temperature change friction force in direction opposite motion of object newtons 2nd law force = mass times acceleration gravitational constant 9.8 m/sec times sec momentum mass times velocity force push or a pull inertia a property of matter that resists change in motion, body at rest remains at rest and a body in motion tends to stay in motion in a straight line gravity the force of attraction between any two bodies in the universe sliding friction uses what lubricants mass represents the amount of matter weight is the pull of gravity on a mass air resistance depends on surface area and velocity as air pressures , increases depth decreases and as air press decreases, depth increases force of gravity depends on what the mass terminal velocity occurs? when air resistance equals gravitational pull types of levers 1st, 2nd, 3rd 1st class fulcrum, between effort and resistance 2nd class resistance between fulcrum and effort 3rd class clas effort between fulcrum and resistance bernoullis principle pressure of moving fluid less hen surrounding fluid, higher speed over curved surface, lower pressure , unbalanced forces causing to lift C----F C x 9/5 + 32 = F F ----C (f-32) x 5/9 = C C ----k C + 273 = K k ----C K-273 = C potential energy PE = M x G x H mass times gravitational constant times height in meter kinetic energy KE= 1/2 x M x V2 one half times mass times velocity squared Formulas accel = Vf- Vi/t S= d/t d=sxt Vf = ( accl x t) + Vi Vi = vf -( accel x t) t=d/s effort force amount of work you obtain from a machine fulcrum pivot point for a lever Joule = newton x meter watt joule/second power work/time types of energy mechanical, heat, chemical,electromagnetic, and nuclear simple machines gear, lever, inclined plane, pulley, screw, wheel and axle to find pressure you must know? force and area one reason air pressure increases at lower altitudes is because? there are more air particles in a given area the brake system on a car is an example of a hydraulic device pressure is force divided by area dure to force of ? the pressure of a fluid increases as depth increases gravity at higher altitudes there are fewer particles of air fluid pressure increases as depth increases Buoyancy he force of a fluid that pushes an object up efficiency compares the output work to the input work... expressed in percent Abutmants The struture that carries the load of an arch bridge Arch Bridge This bridge has great natural shape and is very strong Beam Bridge This bridge can withstand the effects of thermal expansion. Bending Truss Bridges cannot hadel this force. Cable Stayed Bridge A type of suspension bridge Suspension Bridge This bridge can span longer then any other type of bridge and this bridge is suseptable to torsion Compression This force travels downwards through the towers of a suspension bridge. Decking this part of a suspension brige is supported by suspenders and cables. Forces on the bridge Tension and compression Tension Upward force acting upon bridges Triangle strongest shape for supporting a bridge Span The distance a bridge expands between 2 supports Torsion bending or twisting Abutmants The struture that carries the load of an arch bridge Arch Bridge This bridge has great natural shape and is very strong Beam Bridge This bridge can withstand the effects of thermal expansion. Bending Truss Bridges cannot hadel this force. Cable Stayed Bridge A type of suspension bridge Suspension Bridge This bridge can span longer then any other type of bridge and this bridge is suseptable to torsion Compression This force travels downwards through the towers of a suspension bridge. Decking this part of a suspension brige is supported by suspenders and cables. Forces on the bridge Tension and compression Tension Upward force acting upon bridges Triangle strongest shape for supporting a bridge Span The distance a bridge expands between 2 supports Torsion bending or twisting