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Physics
Physics
Problem
A proton moves with velocity
v
⃗
=
2
i
^
+
3
j
^
+
4
k
^
m s
−
1
\vec v = 2\hat i + 3\hat j + 4\hat k\,\text{m s}^{-1}
v
=
2
i
^
+
3
j
^
+
4
k
^
m s
−
1
in a uniform magnetic field
B
⃗
=
i
^
−
2
j
^
+
2
k
^
T
\vec B = \hat i - 2\hat j + 2\hat k\,\text{T}
B
=
i
^
−
2
j
^
+
2
k
^
T
. Calculate the angle (to the nearest degree) between the magnetic force on the proton and the positive
x
x
x
–axis. a)
71
∘
71^{\circ}
7
1
∘
b)
26.6
∘
26.6^{\circ}
26.
6
∘
c)
63.4
∘
63.4^{\circ}
63.
4
∘
d)
90
∘
90^{\circ}
9
0
∘
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