- #1
Tiven white
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Homework Statement
The dot product for two.parralel pointing.unit.vectors is ?
A. 1
B. 0
C. -1
D. Undefined
2. Relevant equation
What Is the Dot Product of Two Parallel Unit Vectors?
- Thread starter Tiven white
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- Parallel Unit Unit vectors Vectors
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The dot product of two parallel unit vectors is 1, as they have a magnitude of 1 and the angle between them is zero. This results in the cosine of zero, which equals 1. Therefore, the correct answer to the question is option A. The discussion confirms the proposed solution is accurate. Understanding the properties of unit vectors and the dot product is essential for solving similar problems.
The answer is (B) but I don't really understand why.
Based on formula of Young Modulus:
$$x=\frac{FL}{AE}$$
The second wire made of the same material so it means they have same Young Modulus. Larger extension means larger value of ##x## so to get larger value of ##x## we can increase ##F## and ##L## and decrease ##A##
I am not sure whether there is change in ##F## for first and second wire so I will just assume ##F## does not change. It leaves (B) and (C) as possible options so why is (C)...
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