A and B lie in an ry-plane. A has magnitude 8.0 and an angle 130; B...

 

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A and B lie in an ry-plane. A has magnitude 8.0 and an angle 130°; B has components B = -7.72 and B, = -9.20. i What are 5 A · B and 4 A x 3B in unit vector notation? ii What is (3î + 5j) × (4 A x 3 B)? Find magnitude and angle of resultant vector. Answer: i)5 A B = 83,58, 4A x 3B = 1135.4 & ii) |(3î + 53) x (4 A x 3B)| = 6620.5, 0 = -31° OR = 329° A and B lie in an ry-plane. A has magnitude 8.0 and an angle 130°; B has components B = -7.72 and B, = -9.20. i What are 5 A · B and 4 A x 3B in unit vector notation? ii What is (3î + 5j) × (4 A x 3 B)? Find magnitude and angle of resultant vector. Answer: i)5 A B = 83,58, 4A x 3B = 1135.4 & ii) |(3î + 53) x (4 A x 3B)| = 6620.5, 0 = -31° OR = 329°