Couldn’t really read or see the problem clearly, but from what I think I saw I would say B
Answer:
C. crust, mantle, core
Explanation:
density increases as you travel from the crust to the inner core
the crust is on top
next is the mantle
and then the core
If the net force is zero, then there is no acceleration, which means no change in velocity. The velocity starts at zero, so it must remain at zero. Therefore, the object will not move.
Answer:
We can apply Boyle's law here, which state that for a fixed temperature and amount of gas, the volume of a gas is inversely proportional to the pressure. Thus,
PV = constant
780 x 100 = 880 x V
V = 88.6 ml
Occurs when its going from one medium to another. But remember when the density of the medium is changed, the velocity of the wave would most likely change.