A Vector $\vec { B }$ ,When Added to the Vector $\overrightarrow { \mathbf { C } } = 3 \hat { \mathbf { i } } + 4 \hat { \mathbf { j } }$

question 25

Multiple Choice

A vector, $\vec { B }$ ,when added to the vector $\overrightarrow { \mathbf { C } } = 3 \hat { \mathbf { i } } + 4 \hat { \mathbf { j } }$ yields a resultant vector which is in the positive y direction and has a magnitude equal to that of $\overrightarrow { \mathrm { C } }$ .What is the magnitude of $\vec { B }$ ?

• A)3.2
• B)6.3
• C)9.5
• D)18
• E)5

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