PRessure is measured in Pascals (Pa). What combination of units is the same as a Pascal?
and
When you exert a force on a fluid in a closed container, does the pressure increase, decrease or remain constant?
I think it will increase, but I'm not totally sure.
The combination of units that is the same as a Pascal (Pa) is 1 Newton per square meter (N/m²).
When you exert a force on a fluid in a closed container, the pressure will indeed increase. This is because pressure is defined as the force exerted per unit area. When you apply a force on the fluid, the force gets distributed over a smaller area, causing the pressure in the container to increase.
The combination of units that is the same as a Pascal (Pa) is the Newton per square meter (N/m²).
To understand why, let's break it down:
- The Pascal is the SI unit of pressure and is defined as one Newton of force per square meter of area (Pa = N/m²). It represents the amount of force applied perpendicular to a given surface area.
- In the SI system, the unit for force is the Newton (N), which is defined as the force required to accelerate a mass of one kilogram (kg) by one meter per second squared (N = kg·m/s²).
- The unit for area is square meters (m²).
So, when you combine the units for force (N) and area (m²), you get Newton per square meter (N/m²), which is equivalent to a Pascal (Pa).
Regarding your second question, when you exert a force on a fluid in a closed container, the pressure increases. This can be explained using Pascal's principle, which states that when a pressure is applied to a fluid in a confined space, the pressure is transmitted equally in all directions. Therefore, when you exert a force on a fluid, the force is distributed over the entire area in contact with the fluid, increasing the pressure.