Plz 50 points!
a stable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at?

a.
valence electrons are discarded into space to create a full outer shell of electrons.

b.
outer shells with valence electrons are transferred or shared.

c.
valence electrons are transferred or shared to create a full outer shell of electrons.

d.
protons (positive charge) pair with valence electrons (negative charge) to create a strong bond.

The metric unit of electrical power is the watt volt ampere ohm

Consider a double atwood machine constructed as follows: a mass 4m is suspended from a string that passes over a massless pulley on frictionless bearings. the other end of this string supports a second similar pulley, over which passes a second string supporting a mass of 3m at one end and m at the other. using two suitable generalized coordinates, set up the lagrangian and use the lagrange equations to find the acceleration of the mass 4m when the system is released. explain why the top pulley rotates even though it carries equal weights on each side.

Each neuron shown in this figure innervates a group of muscle fibers. what is the term for a group of muscle fibers innervated by a single neuron?