How much is 1 Pascal (Pa) equivalent to?

One Pascal (Pa) is defined as a measure of pressure and is equivalent to one Newton per square meter (N/m²). This unit reflects the force (in Newtons) applied over an area (in square meters).

To understand this, consider that pressure is the force exerted per unit area. Therefore, when a force of one Newton is uniformly applied over one square meter of surface area, the pressure exerted is exactly one Pascal. This relationship highlights the fundamental nature of pressure and how it is quantified in terms of force distribution across an area.

The other units listed do not represent pressure; instead, they correspond to different physical quantities. For example, Joules per square meter refers to a different measure related to energy density, while Joules per kilogram pertains to specific energy and Newtons per cubic meter relates to density (as in mass density in fluid mechanics). Understanding these distinctions helps clarify why the correct choice is focused on the relationship between force and area in the definition of pressure.