Question

question
which of the following states of matter can exert pressure?
select the correct answer below:
solid
liquid
gas
all of the above

Explanation:

Step1: Pressure exerted by solids

Solids exert pressure due to their weight. For example, a book on a table exerts pressure on the table. The formula for pressure \(P=\frac{F}{A}\), where \(F = mg\) (weight of the solid, \(m\) is mass and \(g\) is acceleration due to gravity) and \(A\) is the area of contact.

Step2: Pressure exerted by liquids

Liquids exert pressure. The pressure at a depth \(h\) in a liquid of density \(
ho\) is given by \(P=
ho gh\). Liquids exert pressure on the walls of the container as well. For example, water in a bucket exerts pressure on the sides and bottom of the bucket.

Step3: Pressure exerted by gases

Gases exert pressure. Gas molecules are in random motion and collide with the walls of the container. The pressure exerted by a gas is given by the ideal - gas law \(PV = nRT\) (in a more fundamental sense, pressure is due to molecular collisions). For example, air in a balloon exerts pressure on the inner surface of the balloon.

Since solids, liquids, and gases can all exert pressure, the answer is all of the above.

Answer:

all of the above