Apiston above a liquid in a closed container had a area of 1m 2squared. the piston carried a load of 350 kg. what will be the external pressure on the upper surface of the liquid?

In physical science, pressure quantifies the amount of force that is applied at a certain area. Mathematically, this can be transformed as,
                    Pressure = Force / Area

It is also to be noted that force is the product of mass and acceleration due to gravity. 
                 Force = mass x acceleration due to gravity
Substituting,
                Force = (350 kg) x (9.8 m/s²)
                Force = 3430 N

Then, substitute this to the first equation,
                 Pressure = 3430 N / 1m²

ANSWER: Pressure = 3430 N/m² = 3430 Pa

Which of the following statements correctly describeds the models put forth by prolemy and copemicus to explain the universe

Answer the zagros mountains, stretch across western iran and are located next to the khuzestan plain; answer( zagros mountains