Question

ME: I found the promblem on the web site (book:university-physics-with-modern-physics-14th-edition, isbn 9780321973610, chapter 21, question 27.87)

only the charges are different, however I got in to touble with the conclusion.  within the Eq give(Part A), the denomiator it equals to zero; at least with my math.

Thanks for the help

-Av

Given:

Two 1.20m nonconducting wires meet at a right angle. One segment carries 2.00 μC of charge distributed uniformly along its length, and the other carries − 2.00 μC distributed uniformly along it, as shown in the figure

Part A:

Find the magnitude of the electric field these wires produce at point P, which is 60.0 cm from each wire

Part B:

Find the direction of the electric field these wires produce at point P, which is 60.0 cm from each wire.(Suppose that the y-axis directed vertically.)
 
Part C:
If an electron is released at P, what is the magnitude of the net force that these wires exert on it?
 
 
Part D
If an electron is released at P, what is the direction of the net force that these wires exert on it?(Suppose that the y-axis directed vertically.)
 
 
 

 

 

-1.20 m_
+ + + + + + + + +
P
120 m

Image Transcription

-1.20 m_ + + + + + + + + + P 120 m

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