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An elastic material is said to obey Hookes Law ifthe stress is linearly proportional to the strain In 1851, George Stokes derived an expression for the drag force exerted on spherical objects moving in a
Electrical Current Nuclear Size I(charge)=Q/t=(V/t)=Av=nqAv dose in rem=dose in radRBE (:charge density,q:charge, n:#ions/volume) EB(Binding Energy):total energy of Z protons and N neutrons total energy of the nucleus V=Vin-Vout=(-kBT/Ze)ln(cin/cout) mass
A 1 cm length of wire in a coronary stent increases by L=.10m when the temperature changes by T. By how much would the length of a 0.5
cm sample of wire increase for the same temperature change?
A hole in tan aluminum plate has a diameter of 1.250 c
Temperature highly polar molecules will reduce the size of the electric field Heat flows from hotter object to colder object capacitors can store electrical charge&energy,depends on geometry(+&surfaces) temperature velocity of molecules KE Expansion poten
Work Energy & Power 1mmHg=1Torr=133.3Pa Energy(units:J=kgm/s2 m) v=AtotalV (v=volume flow) Work=FD (units: Nm=Joule) M=v(m=mass flow) KE=FD (area under the graph) Archimedes Principle:BF=flVflg=objVobjg (completely submerged) KE= mv2 (convert m to kg) (Vf
Work Energy & Power Apparent weight=tension force= support force=easy to lift Work: Change forms of energy (parallel to displacement) Weight > Buoyant Force Sink Work done by gravity is negative Ideal Fluid: Incompressible, nonviscous, steady, no turbulen
1m=1012pico v=d/t a=(area under graph)/t 1m=109nano a=v/t v=(vi+vf) (only if a. is con) 1m=106micro w=f=mg (g=9.8m/s2) X=vit+at2 (only if a is con) 1m=1000milli Fg=Gmm/r2(G=6.7x10-11 Nm2/kg2) vf2=vi2+2ax (only if a is con) 1m=100centi v(t)=vt(1-e-t/T) 1m=
d vs. t graph, inst. vel=slope of tang line acc=slope of velocity vs. t graph velocity is constant, acceleration=0 when car changes direction, vel is inst= 0=rest body motion=constant vel (0 vel=rest=no acc) N(1)acc is inter. b/t body &other bodies inerti