Physics Index 4 back

# Harder you push on electricelectrical current rt rate

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•Harder you push on electric=↑electrical current •R(t)( rate of decay )=R 0 e -λt =λN(t) (R 0 =activity) •There isn’t a physical move inelectrons, but there was a voltage pulse •λ(Decays/Second)=0.693/T ½ which causes you to react to a situation Flow of current=transverse •T e ff =T p T b /T p +T b (p=physical, b=biological) •Electrical charge, in and out the cell, membrane changes voltage •Ratio: 2e -t(λ- λ) (2:depending on how many more ions there are, λ=.693/ T ½ ) which propagates down the cell •Since the mass of the nucleus is proportional to A, the density of the nuclear material is independent of A •What defines the voltage across the cell membrane? •Stability is a competition b/t the repulsive Coulomb force between protons and the attractive “strong” The charge outside & inside the membrane Interaction between nucleons. (Unlike the Coulomb force, nuclear force has a very short range) •Higher concentration= ↑ diffusion=more voltage to turn diffusion off •Positive charges repel each other, why is it stable? Repulsive force between 2 protons there should be •Voltage difference due to concentration Attractive forces and coulomb forces •Diffusion:High to Low •Extra neutrons aid stability but too few or too many may cause in stability •Nernst Potential:

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