Now we will consider a two$-$dimensional arrangement of charges $($Figure $1).$ A point charge $q_1=2\mathrm{.}0C$ is located on the positive $y$ axis at $y=0\mathrm{.}30m,$ and an identical charge $q_2$ is at the origin. Find the magnitude and direction of the total force that these two charges exert on a third charge $q_3=4\mathrm{.}0C$ that is on the positive $x$ axis at $x=0\mathrm{.}40m.$

Figure

$1$ of $3$

$q_1$ are identical, the force exerted by $q_2$ is larger than the force exerted by $q_1$ because $q_3$ is closer to $q_2.$

Part A $-$ Practice Problem:

Part B $-$ Practice Problem:

In the same example, what is the direction of the force on $q_3$ if $q_1=2\mathrm{.}0C,$ as in the example, but $q_2=-2\mathrm{.}0C?$

Express your answer in degrees below the $-x$ axis.

$=38,\sqrt[]{}AharrO?$ below the $-x$ axis

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