57 626
Assignments Done
Successfully Done
In February 2018
Your physics homework can be a real challenge, and the due date can be really close — feel free to use our assistance and get the desired result.
Be sure that math assignments completed by our experts will be error-free and done according to your instructions specified in the submitted order form.
Our experts will gladly share their knowledge and help you with programming homework. Keep up with the world’s newest programming trends.

Answer on Mechanics | Relativity Question for CJ

Question #14628
The force vector A has a magnitude of 71.0 newtons (N) and points due east. The force vector B has a magnitude of 145 N and points 74.0 ° north of east. Find the (a) magnitude and (b) direction of A - B. (Give the direction as a positive angle with respect to due east). Find the (c) magnitude and (d) direction of B - A. (Give the direction as a positive angle with respect to due west).
Expert's answer
A = 71N i + 0N j
B = 145Ncos74 i + 145Nsin74 j = 40N i + 139N j

A - B = (71 - 40)N i - 139N j = 31N i - 139N j
R = √(31² + 139²) = 142 N
Θ = tan-1(-139/31) = -77º = 283º w/r/t East (quadrant IV)

B - A = -31N i + 139 j
R = 142 N
Θ = -77º w/r/t West = 283º w/r/t West (quadrant II)

Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!


No comments. Be first!

Leave a comment

Ask Your question