Questions on Force...?

Question

What is the ratio of work output to work input is called?

Who made the discovery that pressure is exerted in all directions through a fluid?

Liquid pressure depends on the density of the liquid and its _________.

Answer 1

work output/work input = efficiency

Pascal in 1647

depth

"assuming no atmospheric pressure is present"

Answer 2

The ratio of work output and work input is known as efficiency.

The discovery of pressure being exerted in all directions through a fluid was made by Blaise Pascal.

Liquid pressure depends on both density and depth.