IDZ 2.2 - Option 19. Decisions Ryabushko AP

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1. Given the vectors a, b, and c. It is necessary to: a) calculate the mixed product of three vectors; b) Find the unit vector product; c) to calculate the inner product of two vectors; g) check whether collinear or orthogonal two vectors; e) verify whether the three vectors are coplanar.
 1.19 a = -2i + 4j - 3k, b = 5i + j - 2k, c = 7i + 4j - k; a) a, -6b, 2c; b) -8b, 5c; a) -9a, 7c; g) a, b; d) a, -6b, 5c.

 2. The top of the pyramid are located at points A, B, C and D. Calculate: a) the area of the said faces; b) cross-sectional area, passing through the middle of the rib l and two top of the pyramid; c) the volume of the pyramid ABCD.
 2.19 A (-7, -6, -5), B (5, 1, -3), C (8, -4, 0), D (3, 4, -7); a) BCD; b) l = AD, B and C

 3. Given three powers P, Q, R, applied to point A. Calculate: a) work done by the resultant of these forces, when the point of its application, moving rectilinearly moves to point B; b) the amount of time the resultant of these forces about point B.
 3.19 P = (7, -5, 2), Q (3, 4, -8), R (-2, -4, 3), A (-3, 2, 0), B (6, 4, - 3)

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  • Content type File
  • Content description 136,5 kB
  • Added to the site 15.06.2020

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Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)
For the convenience of viewing IDZ solutions on smartphones, an additional file in PDF format is sent

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IDZ 2.2 - Option 19. Decisions Ryabushko AP
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