What do you mean by pressure? Write its formula. A man is carrying a load on his head whose surface area is 0.3m^2 which exerts a force of 150 N. Calculate the amount of pressure he must be feeling because of that load on his head.
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Explanation:
Refraction is the bending of light (it also happens with sound, water and other waves) as it passes from one transparent substance into another. This bending by refraction makes it possible for us to have lenses, magnifying glasses, prisms and rainbows. Even our eyes depend upon this bending of light.
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Pressure, in the physical sciences, the perpendicular force per unit area, or the stress at a point within a confined fluid. ... In SI units, pressure is measured in pascals; one pascal equals one newton per square metre. Atmospheric pressure is close to 100,000 pascals.
P=F/A
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