It is clear that the core is subject to change
Answer:
Option A
Explanation:
Emma creates a pressure difference allowing the fluid to flow
Answer:
c.
Explanation:
If the object starts to slide it must be on a slope.
There are 2 forces acting on the object - gravity and the friction between the object and the surface.
If sliding starts then the forces must be unbalanced.
The force of gravity is greater than the friction.
