3Chapter 3 vectors x Mail Sattari, Massood x Polar Rectangular Coor x www.webass

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3Chapter 3 vectors x Mail Sattari, Massood x Polar Rectangular Coor x www.webassign.net/web/Student/Assignment-Responses/submit?pos 3&dep; 15632934 Assignment Scoring Your last submission is used for your score. 7. 08 points I Previous Answers SerPSE9 3.P026.WM. My Notes Consider the vectors A 4.00 i 7.00 j and B 00 i 3.00 j. (a) Draw the vector sum C A B and the vector difference D A- B. Do this on paper. Your instructor may ask you to turn in this work. (b) Calculate C and D in terms of unit vectors. (c) Calculate C and D in terms of polar coordinates, with angles measured with respect to the positive x axis. vector magnitude direction o counterclockwise from the +X axis vector 6.08 magnitude The magnitude is determined from the Pythagorean theorem. 6.08 direction Draw a careful picture of this vector and then check your trigonometry defin Ons counterclockwise from the +x axis Need Help? Read It Watch It Submit Answer Save Progress Practice Another Version View Previous Question Question 7 of 7 Talk to me here Ask Your Teacher 630 PM 2/6/2017

Explanation / Answer

C = A + B

C = 4i + 7j + 4 i - 3j = 8i + 4j

C = 8i + 4j

D = A - B

D = 4i + 7j - 4i + 3j = 0i + 10j

D = 10 j

lCl = sqrt (8^2 + 4^2) = 8.94

lDl = sqrt (10^2) = 10

direction:

theta-c = tan-1 (4/8) = 26.57 deg

theta -D = tan-1 (10/0) = 0

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