f two unit vectors AH and BH are added, the resultant has the magnitude equal to √3. If AH is subtracted from BH, theresultant will have the magnitude
Question
f two unit vectors AH and BH are added, the resultant has the magnitude equal to √3. If AH is subtracted from BH, theresultant will have the magnitude
Solution
Given that AH and BH are unit vectors, their magnitudes are both 1.
When two vectors are added, the magnitude of the resultant vector is given by the formula:
√[(AH)^2 + (BH)^2 + 2(AH)(BH)cosθ]
where θ is the angle between the two vectors.
Given that the magnitude of the resultant vector when AH and BH are added is √3, we can substitute the known values into the formula:
√3 = √[(1)^2 + (1)^2 + 2(1)(1)cosθ]
Solving this equation gives cosθ = -1/2. This means that the angle between the vectors is 120 degrees (or 2π/3 radians).
When one vector is subtracted from another, the magnitude of the resultant vector is given by the formula:
√[(AH)^2 + (BH)^2 - 2(AH)(BH)cosθ]
Substituting the known values into this formula gives:
Resultant magnitude = √[(1)^2 + (1)^2 - 2(1)(1)(-1/2)]
Solving this equation gives a resultant magnitude of √3.
Therefore, if AH is subtracted from BH, the resultant will have a magnitude of √3.
Similar Questions
What is the magnitude of vector -3i + 5j?A√34B√32C√8D√16
Find the magnitude of vector 𝐴 = 3𝑖 + 2𝑗 + 𝑘
What is the magnitude of vector, v = 1/√3 i + 1/√3 j + 1/√3 k?A3B2C1D0
What is the magnitude of the vector a=[1,0,2,−1]?√2√62√3
Let⃗a = ˆi − ˆj + √2ˆk and⃗ b = −12ˆi + 5ˆja) Compute 3⃗a −⃗ bb) Find the unit vector in the direction of⃗ b.c) Compute the magnitude of⃗a .d) Find the direction angles (using the direction cosines) for⃗a .
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.