Answer 1 and 2 ty 1. A vector lies in the x-y plane. For what orientations will both components be negative? A. The vector lies between 0° and 90° from the x-axis.   B. The vector lies between 180° and 270° from the x-axis.   C. None. Just like for vector magnitudes, components are always positive.   D. The vector lies between 90° and 180° from the x-axis. 2. Which of the following statements is correct? A. If an equation is dimensionally correct

Physics for Scientists and Engineers
10th Edition
ISBN:9781337553278
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter3: Vectors
Section: Chapter Questions
Problem 19P
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Answer 1 and 2 ty

1. A vector lies in the x-plane. For what orientations will both components be negative?

A.
The vector lies between 0° and 90° from the x-axis.
 
B.
The vector lies between 180° and 270° from the x-axis.
 
C.
None. Just like for vector magnitudes, components are always positive.
 
D.
The vector lies between 90° and 180° from the x-axis.

2. Which of the following statements is correct?

A.
If an equation is dimensionally correct it must be true and if an equation is not dimensionally correct it cannot be true.
 
B.
If an equation is dimensionally correct it may be true and if it is not dimensionally correct then it cannot be true.
 
C.

If an equation is dimensionally correct it must be true and if it is not dimensionally correct it may be true. 

D.
If an equation is dimensionally correct it may be true and if an equation is not dimensionally correct it may be true.
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