Vector C is multiplied by the scalar −2.

Physics
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1. https://tcan4424-oakcliff-ccl.gradpoint.com/Resour... Vector C is multiplied by the scalar −2. What angle does the new vector make with the y-axis?

2. The components of vector A and vector B are:


Ax = + 7.6 Bx = +15.2
Ay = -9.2 By = −18.4

Which equation describes the relationship between the two vectors?

a. 68° 

b. B = A

c. B = A + (2,0)

d. B = 7.6A

e. B = 2A

3.What are the components of a vector with a magnitude of 4.00 and a direction of -112°?

May 18th, 2015

According to given question

angle does the new vector make with the y-axis

Dot productB • C = |B| |C| cos θ 



θ = arccos ( (B•C) / (|B| |C|) ) 
= arccos ( (4.8*5.6) 
=  
= 105° Ans. 

Question(2)

C)B=A+(2,0)

Question(3)

Component of of vector is 5.6

May 18th, 2015

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May 18th, 2015
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May 18th, 2015
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