For the three vectors shown in $($Figure $1),$ A$+$B$+$C$=1^$A$->+$B$->+$C$->=1^.$ What is vector B$$ B$->?$

Write B$$ B$->$ in component form.

part A: Express your answer in terms of the unit vectors i$^$i$^$ and j$^$j$^.$ Use the 'unit vector' button to denote unit vectors in your answer.

Part B:

What is the magnitude of B$$ B$->?$

Express your answer using two significant figures.

Where A is $4$I and C is $2$