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Vectors
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hey man!! area is vector dont mislead this poor guy!! Intensity is the amount of sound energy passing through unit area the area being held perpendicular to the direction of propagation of sound!! consider an unit area held perpendicular to the propagation of sound..the direction of the area is perpendicular to the plane of the area and in the direction of the propagation of sound!! THATS IT!!!!IT IS NOT SCALAR!!!!
for algebric mathamatical calculations .....we dont need the direction of area ...rather we are concerned with the magnitude of it..
yes it can be added ..
as 2 of 40 sq units make 80 sq units ...
but it is a vector ...
duh..chapter vectors and 3d geometry..magnetics ,and many mmore
its a vector with dxn along normal .
it's a rather puzzling idea, but area can be either a scalar or vector quantity. Usually area is a scalar quantity. E.g. the area of my house is 2000 square feet. In more advanced calculus courses you'll run into area vectors.
area is a vector because as u know pressure=force/area which is scalar"pressure"=vector"force" / X"area" area"X"= force/pressure which is vector/scalar =vector so area is a vector
In geometry, for a finite planar surface of scalar area S, the vector area
is defined as a vector whose magnitude is S and whose direction is perpendicular to the plane, as determined by the right hand rule on the rim (moving one's right hand counterclockwise around the rim, when the palm of the hand is "touching" the surface, and the straight thumb indicate the direction).
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