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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?
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Give two basic important characteristics of nuclear forces? Neutrons are the best projectiles of process of nuclear reactions. Why? Give any two properties of neutron.
A painter uses a 25.8-cm long screwdriver to pry the lid off of a can of paint. If a force of 85 N is applied to move the screwdriver 60.0° from the perpendicular, calculate t
please explain newtons first law of motion
Will fiber optics systems be cheaper in the future? Lighting fiber optics is not a certain mass-market product and maybe will never be. Even today mainly systems are, at least
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MOTION EXAM WITH ANSWERS
A solar cell or photo voltaic cell is a semiconductor device that converts photons from the sun into electricity. It can also be defined as a semiconductor electrical junction appa
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Properties of light: The wavefronts can be of different shapes depending on the size and shape of light source and the distance from it. Huygens' principle states that every p
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