Part A What is the magnitude of the force F on the -10 nC charge in (Figure 1)? Suppose that a = 1.2 cm. Express your answer with the appropriate units. Figure < 1 of 1 > • View Available Hint(s) HÁ -15 nC 5.0 nC 3.0 cm F = Value Units y a Submit -10 nC Part B What is the direction of the force F on the -10 nC charge in (Figure 1)? Give your answer as an angle measured cw or ccw (specify which) from the +-axis.
Hint: Use Coulomb's law to determine the components of the forces acting on the charge and add them correctly into the resultant force components. Recall how the components of a vector are related to its directional angle.
Consider the following diagram which represents the direction of forces on the reference charge (-10 nC) due to other two charges.
Here, F1 is the electrostatic force exerted on -10 nC by the -15 nC and F2 is the electrostatic force exerted on -10 nC by 5 nC.
In this case,
q1 = -15×10-9 C
q2 = 5×10-9 C
q = -10 ×10-9 C
AC is the distance between q1 and q. The value of AC is calculated in the following way.
The angle made by F1 with the X-axis in the clockwise direction is calculated in the following way.
According to Coulomb’s law, the value of F1 is calculated in the following way.
According to Coulomb's law, the value of F2 is calculated in the following way.
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