6. What is pressure? What does pressure depend on?
7. What is atmospheric pressure? What is it caused by?
8. Why is it difficult to cut vegetables with a blunt knife
Answers
Answer:
the force that is produced when you press on or against something.Pressure is scalar quantity which is defined as force per unit area where the force acts in a direction perpendicular to the surface.
By definition atmospheric pressure is 'force per unit area exerted against a surface by the weight of air above that surface'. ... Other equivalent units are 760 mmHg and 1013.25 millibars. Mean sea level pressure (MSLP) is the pressure at sea level. This is the pressure normally given in weather reports.
Answer:
6. pressure is the thrust per unit area. pressure depends on area on which the thrust is applied and the magnitude of thrust
7. the thrust exerted per unit area on the earth surface due to coloumn of air is called atmospheric pressure
8. it is difficult to cut vegetables with blunt knife because of more area exerted less pressure so is difficult to cut vegetables with blunt knife