20 points come an get it ppl! : d
pretend you are an electron in a copper wire which is being used to connect a battery to a flashlight bulb. because this circuit uses a(n) current, you as the electron in the wire will
a)
alternating, move first one way then the other.
b)
direct, move first one way then the other.
c)
alternating, move only in one direction.
d)
direct, move only in one direction.

Adiver named jacques observes a bubble of air rising from the bottom of a lake (where the absolute pressure is 3.50 atm) to the surface (where the pressure is 1.00 atm). the temperature at the bottom is 4.00 ∘c, and the temperature at the surface is 23.0 ∘c.what is the ratio of the volume of the bubble as it reaches the surface (vs) to its volume at the bottom (vb)? if jaques were to hold his breath the air in his lungs would be kept at a constant temperature. would it be safe for jacques to hold his breath while ascending from the bottom of the lake to the surface?