The higher the depth, the higher the mass of the liquid that creates pressure
(a) 1800 N
The equation of the forces along the vertical direction is:

where
is the component of the applied force along the vertical direction
N is the normal force on the sled
mg is the weight of the sled
Substituting:
F = 1210 N
m = 246 kg

We find N:

(b) 0.580
The equation of the forces along the horizontal direction is:

where
is the horizontal component of the push applied by the mule
is the static frictional force
Substituting:
F = 1210 N
N = 1800 N

We find
, the coefficient of static friction:

(c) 522 N
In this case, the force exerted by the mule is

So now the equation of the forces along the horizontal direction can be written as

where

and
is the new frictional force, which is different from part (b) (because the value of the force of friction ranges from zero to the maximum value
, depending on how much force is applied in the opposite direction)
Solving the equation,

A. Thermal energy
Thermal energy is heat energy, therefore the hotter a solid is the more thermal energy it has.
C. Volume
When an object gets hotter, it expands. This is becuase the particles vibrate more and so are less compact.
Answer:
1)The rocks in Virginia represent many periods in history.
2)Virginia was once covered by a sea.
3)The Allegheny Plateau includes coal deposits.
4)The state’s climate was once warm and humid, like a tropical jungle.
Explanation:
hope this helps!!!