Question

Atmospheric pressure is about 1.00 × 105 Pa on

average. What is the downward force of the air on a desktop with
surface area 1.27 m2?

Answer 1

The downward force of the air on a desktop with a surface area of 1.27 m^2 can be calculated using the formula Force = Pressure × Area. Substituting the given values, we find that the force is approximately 1.2877 × 10^5 N.

Step-by-step explanation:

Atmospheric pressure is the pressure exerted by the weight of air above a given area. The average atmospheric pressure at sea level is about 1.01 × 105 Pa (equivalent to 1 atm). To find the downward force of the air on a desktop with a surface area of 1.27 m2, we can use the formula:

Force = Pressure × Area

Substituting the given values, we have:

Force = (1.01 × 105 Pa) × (1.27 m2)

Simplifying the multiplication, we get:

Force = 1.2877 × 105 N

Therefore, the downward force of the air on the desktop is approximately 1.2877 × 105 N.