Sliding friction, (possibly) applied force, gravity, and normal force.
Yes, Avalanches do occur on Mount Everest.
Steep hills, mountians, and valleys.
Forces always occur in pairs. They even have reaction force pairs occur when there is no motion
That is a great question! Something that can occur on a steep slop during an earthquake is that it can trigger massive land slides, which is pretty much just moving land, a land slide is pretty much like a mud slide!
Something is in "equilibrium" when it is in a state of perfect balance or rest. All forces acting on it are equal and opposite. It is in a "minimum" energy state.
True.
The two forces must be equal and opposite.
first law
a sliding boundry is where earthquakes occur. if you picture two squares with a crack in between them, imagine that one slides forward and the other slides back... that's a sliding boundry.
Forces always occur in pairs. They even have reaction force pairs occur when there is no motion
You have flung a wide net there.
nonpolar