3. Three vectors extending from the origin are given as r1 = 7a, + 3a, – 2a,, r2 = -2a, + 7ay – 3a, and r3 = 2a, – 2a, + 3a,. Find: A. A unit vector perpendicular to both r, and r2; B. A unit vector perpendicular to the vectors r1 – r2 and rą- r3i C. The area of the triangle defined by r, and r2; D. The area of the triangle defined by the heads of r, r2 and r3.
3. Three vectors extending from the origin are given as r1 = 7a, + 3a, – 2a,, r2 = -2a, + 7ay – 3a, and r3 = 2a, – 2a, + 3a,. Find: A. A unit vector perpendicular to both r, and r2; B. A unit vector perpendicular to the vectors r1 – r2 and rą- r3i C. The area of the triangle defined by r, and r2; D. The area of the triangle defined by the heads of r, r2 and r3.
College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter3: Two-dimensional Kinematics
Section: Chapter Questions
Problem 20PE: A new landowner has a triangular piece of flat land she wishes to fence. Starting at the west...
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