Atmospheric Pressure is about 1.0x10^5 Pa. What is the downward force of the air on a desktop of surface area 1m^2?
Here we are dealing with force, pressure and area so we use the formula F=PA. We simply slot in the given numbers where P=1x105, and A=1. The resulting force is 1x105N.
MK
Related Physics A Level answers
All answers ▸Is the excitation and de-excitation of an electron from the ground state (of an atom) due to the collision of another particle (e.g. electron) an elastic collision or an inelastic collision.
Steel has a density of 8030kg/m^3. Show that a steel ball with a diameter of 5cm weighs approximately 5N
How many joules of heat energy are required to raise the temperature of 10kg of water from 22⁰C to 27⁰C? (The Specific Heat Capacity of water is 4200 Jkg^-1⁰C^-1)
Explain, in terms of the behaviour of molecules, how a gas exerts a pressure on the walls of its container. (4)