# Homework 2 - Homework 2 Homework2...

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2/7/2017Homework 2
Homework 2Due: 11:00pm on Tuesday, January 17, 2017You will receive no credit for items you complete after the assignment is due.Grading PolicyProblem 3.11A vector has the componentsand.Part AWhat is the magnitude of this vector?Express your answer to two significant figures and include appropriate units.ANSWER:CorrectPart BWhat angle does this vector make with the positiveaxis?Express your answer to two significant figures and include appropriate units.
CorrectProblem 3.6You are driving up a long, inclined road. After 1.00you notice that signs along the roadside indicate that your elevationhas increased by 550.Part AWhat is the angle of the road above the horizontal?Express your answer using two significant figures.
Part BHow far do you have to drive to gain an additional 200of elevation?Express your answer using two significant figures.54
2/7/2017Homework 22/34
CorrectPredict/Calculate Problem 3.15Theandcomponents of a vectorare= 12and= ­9.0, respectively.Part AFind the direction of the vector.Express your answer using two significant figures.
Part BFind the magnitude of the vector.Express your answer using two significant figures.
Part CSuppose thatandare doubled. Find the direction and the magnitude of the new vector.Express your answer using two significant figures.
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