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Homework 4

# Homework 4 - lim(kl9356 Homework 4 Weathers(17104 This...

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lim (kl9356) – Homework 4 – Weathers – (17104) 1 This print-out should have 11 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 (part 1 of 2) 10.0 points Consider four vectors vector F 1 , vector F 2 , vector F 3 , and vector F 4 , where their magnitudes are F 1 = 31 N, F 2 = 27 N, F 3 = 28 N, and F 4 = 58 N. Let θ 1 = 140 , θ 2 = - 140 , θ 3 = 34 , and θ 4 = - 63 , measured from the positive x axis with the counter-clockwise angular direction as positive. What is the magnitude of the resultant vec- tor vector F , where vector F = vector F 1 + vector F 2 + vector F 3 + vector F 4 ? Answer in units of N. 002 (part 2 of 2) 10.0 points What is the direction of this resultant vector vector F ? Note: Give the angle in degrees, use coun- terclockwise as the positive angular direction, between the limits of - 180 and +180 from the positive x axis. Answer in units of . 003 (part 1 of 2) 10.0 points A particle undergoes three consecutive dis- placements: vector d 1 = d 1 x vector i + d 1 y vector j + d 1 z

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