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  3. 159 please help...

Question: 159 please help...

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(b) A-51 + 3J m B 7i-12kN 1.58 Compute the cross product C-A X B for each of the cases given in Prob. 1.57. Identify the units of each product. 1.59 Given r 4i -6j +2k m (position vector) F 20i + 40j-30k N (force vector) 2 0.8j+ 0.6k (dimensionless unit vector) compute (a) r × F-A; and (b) Ax r . F. 1.60 Compute A x B and C x B for the position vectors shown. 1.61 Use the dot product to find the angle between the position vectors A and B. Check your results by trigonometry 1.62 Use the dot product to find the angle between the position vectors A and B. 1.63 Iet A and R be two nonparallel vectors that ie in a common plon s e 1.59 please help
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