Answer:
Isolated or Closed system, both are correct
Compression is above the equilibrium and rarefaction is below
Answer:
the answer for the question is the last option
Answer:
the earth isn't a cracked hard boiled egg, but I'd guess they mean layers. A thin shell/crust and the yolk and whites of the egg represent layers of the earth
Explanation:
Here it is. I used the surface charge density σ as q/Area, and then wrote it out in terms of q at the end
