the magnitude of the x component of vector A is 3and the magnitude of vector A is 5 .what is the magnitude of the y component of vector A

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Solution

Dear Student,
Here in this case ,we can write that ,
$\vec{A} = 3 \hat{i} + y \hat{j} \Rightarrow |\vec{A}| = \sqrt{9 + y^{2}} \Rightarrow 5 = \sqrt{9 + y^{2}} \Rightarrow 25 = 9 + y^{2} \Rightarrow y^{2} = 16 \Rightarrow y = 4$
Regards

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the magnitude of the x component of vector A is 3and the magnitude of vector A is 5 .what is the magnitude of the y component of vector A

Dear Student, Here in this case ,we can write that , A→=3i^+yj^⇒A→=9+y2⇒5=9+y2⇒25=9+y2⇒y2=16⇒y=4 Regards

Dear Student,
Here in this case ,we can write that ,
$\vec{A} = 3 \hat{i} + y \hat{j} \Rightarrow |\vec{A}| = \sqrt{9 + y^{2}} \Rightarrow 5 = \sqrt{9 + y^{2}} \Rightarrow 25 = 9 + y^{2} \Rightarrow y^{2} = 16 \Rightarrow y = 4$
Regards