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## Homework Statement

a magnetic moment of

__= 1 (__

**U**__) + 2 (__

**i****) , surrounded by a magnetic uniform field of**

__k____= 3 (__

**B****) + 4 (**

__i____) - 1 (__

**j**__)__

**k**find the potential energy in mJ ?

## Homework Equations

dot product of 2 vectors

( ui*bi)+(uj*bj)+(uk*bk) =

or finding the module of both vector and doing AB cos theta

but we would need to find the angle between the 2 vectors with the formula

**/ uB so dot product over product of both modules**

__u*B__**3. The attempt at a**

dot product of u and b ,so the answer should be 11.4 or 5,39 (539) ,