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The magnitude of the x-component of vector $\vec{A}$ is 3 and the magnitude of vector $\vec{A}$ is 5. What is the magnitude of the y-component of vector $\vec{A}$ ?

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detailed solution

Correct option is B

A→ = Axi^+Ayj^Also, A = Ax2+Ay2∴ 5= 32+Ay2Squaring both side, we get 25 = 9+Ay2Ay2 = 25-9 = 16 or Ay = 4

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The magnitude of the x-component of vector A→ is 3 and the magnitude of vector A→ is 5. What is the magnitude of the y-component of vector A→ ?

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The magnitude of the x-component of vector $\vec{A}$ is 3 and the magnitude of vector $\vec{A}$ is 5. What is the magnitude of the y-component of vector $\vec{A}$ ?