A proton moves along the *x*-axis with *v** _{x}*=1.0 x 10

a)

$\overline{)\begin{array}{rcl}{\mathbf{B}}& {\mathbf{=}}& \frac{{\mathbf{\mu}}_{\mathbf{0}}\mathbf{q}\mathbf{v}\mathbf{}\mathbf{s}\mathbf{i}\mathbf{n}\mathbf{}\mathbf{\theta}}{\mathbf{4}\mathbf{\pi}{\mathbf{r}}^{\mathbf{2}}}\end{array}}$

μ_{0} = 4π × 10^{-7} T•m/A

v = *v** _{x} *=1.0 x 10

q = 1.6 x 10^{-19 }C

r = 1 cm = 0.01 m

A proton moves along the *x*-axis with *v** _{x}*=1.0 × 10

a) As it passes the origin, what are the strength and direction of the magnetic field at the (0 cm, 1 cm, 0 cm) position? Express your answer in terms of the unit vectors **î**, **ĵ**, and **k̂**.

b) As it passes the origin, what are the strength and direction of the magnetic field at the (0 cm, -2 cm, 0 cm) position? Express your answer in terms of the unit vectors **î**, **ĵ**, and **k̂**.

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