Question

6A 20b Post 6 Oct 17, 2014, 15:00-16:40 ISIK UNIVERSITY, PHYS 101 -General Physies I MIDTERM EXAM 1 First Name Last Name Student ID ROW NUMBER: P2 Grade: P2. (20 points) a) (1o points) Find a unit vector, , which is perpendicular to the plane formed by the vectors ã and b defined as ax i perpendicular to both and s 14+11

Answer 1

A^vector = 3i + 5j - k^B^vector = -2i + j - 3k^perpendicular of A^vector and B^vector is A^vector times B^vector = Vertical-bar I j k 3 5 -1 -2 1 -3 Vertical-bar= i[-15 + 1] - j[-9 - 2] + k^[3 + 10] A^vector times B^vector = -14i + 11j + 13k unit vector = -14 I + 11 j + 13 k/squareroot 14^2 + 11^2 + 13^2 = -14 I + 11j + 13k/22.04 c^= -0.635 i^+ 0.5 j^+ 0.60 k^