Question

name two devices used in daily life which work on the existence of atmospheric pressure

Answer 1

Tires - If there was less atmospheric pressure the pressure inside the tires would rise.

Car engines - The lower the atmospheric pressure (as in a car going to higher elevations) the less power it can generate. Thus the car is weaker.

interesting:

Answer 2

Tires and car engines are the two devices used by us in everyday life which work on the existence of atmospheric pressure.