When hockey players push the puck along the ice it slides causing heat which melts the ice causing the friction against the ice to be less.
F - False.
The law of conservation of momentum states that the total momentum is conserved.
Explanation:
where is the question
I did not understood this question
To solve this problem we will apply the concepts related to pressure, depending on the product between the density of the fluid, the gravity and the depth / height at which it is located.
For mercury, density, gravity and height are defined as



For the air the defined properties would be



We have for equilibrium that


Replacing,

Rearranging to find 


Therefore the elevation of the mountain top is 9400ft