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Force in Two and Three Dimensions - Pressure and Fluids
Pressure is a force exerted over an area and is measured in Pascals (Pa).
P (in Pa) = Force (in newtons) / area (in m2) If a 750 N person were to accidentally step on your foot, would you rather they were wearing a flat soled sneaker or a narrow spike heel when they hit your foot? Obviously the sneaker because the force would be spread over a much larger area and the pressure at any point of your foot would be much less than if the force is concentrated on just a narrow heel. Example - If a person who weighs 750 Newtons makes contact with your foot on a heel which is 0.5 cm x 0.5 cm, what is the pressure exerted on your foot?
There are two major differences between "center of gravity" and "center of mass": 1) The term "center of gravity" aplies to the bodies with mass and weight, while the term "cent
An echo is easily the retransmission of speaker's own voice caused by reflection at a distance surface. If there is a sound reflector at a distance d from host, then the time in
A 32.53 N light hangs at equilibrium from two cables at angles 78.3 and 60.2 with respect to the ceiling. What is the tension in the first cable?
THE MAGNETIC CIRCUIT In an electric circuit, a current is established due to the existence of an electromotive force. In the same way, in a magnetic circuit, a flux is establis
How to calculate n factor of disproportion reaction? Total number of electron change divided by no. of moles of reactant This is conventional method Total electron chan
Maxwell''s equations are a set of partial differential equations that, together with the Lorentz force law, form the foundation of classical electrodynamics, electric circuits and
An air stream is saturated with a vapor (B) at 130°F and 1 atm pressure. It is cooled down to 80°F where some of the B is condensed and separated from the vapor stream. The remai
difference between like and unlike forces
Scientific principle behind a laser: The basic scientific principle behind a laser was first put forward by Dr. Charles H. Towns in 1954 which later led to the development
MOTION EXAM WITH ANSWERS
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