Calculate the change in pe of 8 million kg of water dropping 50 m over niagara falls

"4,000,000,000 J" is the "Potential Energy" of water dropping over "Niagara falls".

Explanation:

The body possess some energy according to the position of the object that is the when an object is placed at a height it stores some energy it is called "Potential Energy".

Formula used to calculate the "Potential Energy" is

Where, "m" is mass of an object given that 8,000,000 kg, "g" is acceleration due to gravity is and "h" is height of the object is 50 m.

Substitute the given values in the formula,

Potential energy =

Potential energy = 4,000,000,000 J

real, smaller and upside-down.   so the answer should be b.

which piece of furniture will have the most inertia and give the furniture movers the most difficulty in moving?  

answer

a 75kg dining table