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kaitlynmoore42
26.07.2019 •
Physics
Which of the following classifications of matter includes materials that can no longer be identified by their individual properties? a. atom b. compound c. element d. mixture
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Ответ:
hope this helps
Ответ:
Which of the following classifications of matter includes materials that can no longer be identified by their individual properties?
A. Element
B. Mixture
C. Atom
D. Compound
THE CORRECT ANSWER IS D. COMPOUND
Ответ:
Explanation:
(a). The line used to specify the orientation of the plane of paper is the line normal to the plane of sheet of paper
(b). The direction of the vector represents the normal to the lat surface while the Magnitude represents the area of flat surface.
(c). Say the area of each smaller square is 1 square unit, then the area of graph paper is 64 square units. Direction of this area vector is given by a unit vector perpendicular to the graph sheet. If X and Y axes are in the plane of paper, then unit vector normal to the sheet of paper is K. Hence the complete vector is 64 K sq. units.
Area vector of each individual square is 1 squ. unit. where all these individual squares are parallel as vectors.
(d). Absolutely.
the entire sheet can be represented by a single vector. Its area vector is the sum of area vectors of three flat sides of triangular tube.
(e) NO.
Orientation of the individual squares is not the same for all squares. They cannot be represented by the same vector when compared to part C above, because they are in different directions even tough their magnitude are same.
(f) To represent a surface with a single area vector, divide the surface in to as many as possible flat pieces (if necessary infinitely large number of infinitesimally small pieces). Find the area vectors of all pieces. Add all the area vectors to obtain the single area vector resenting the complete surface.
But since the process can be done for any surface, any surface can be represented by a single area vector.
i hope this helps, cheers