In the atmospheric pressure formula, what do P and T represent?

• A. P = Power, T = Time
• B. P = Pressure, T = Temperature
• C. P = Pressure, T = Torque
• D. P = Potential, T = Temperature

Answer: (B)

In atmospheric physics, the letters P and T refer to the quantities that describe the state of the air: P is pressure—the force per unit area that the air exerts on a surface, with common units like Pascals or atmospheres. T is temperature—the measure of the air’s average molecular kinetic energy, typically expressed in Kelvin for calculations. These two variables are central in how gases behave, as seen in relationships like the ideal gas law where pressure and temperature interact to determine the state of the gas. So the pair P = Pressure and T = Temperature is the correct interpretation. The other pairings switch to terms not used in this context (power or time, torque, or potential), so they don’t fit the atmospheric pressure framework.