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a. Compare the magnitudes of the two charges 

|Q1|>|Q2|

|Q1|=|Q2|

|Q1|<|Q2|

There is not enough information to determine the relative magnitudes of the charges.

 

b. What do we know about the signs of the charges from looking at the picture?

Q1 and Q2 have the same sign 

Q1 and Q2 have opposite signs

There is not enough information in the picture to determine the relative signs of the charges.

 

c. Compare the magnitudes of the electric fields at points A and B. 

|EA| > |EB| 

|EA| = |EB|

|EA|< |EB|

There is not enough information in the picture to determine the relative signs of the charges.

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Ankit Lal
Ankit LalLv10
16 Mar 2021

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

Please explain.

At a particular moment, one negative and two positive charges are located as shown in the figure. Your answers to each part of this problem should be vectors. It helps a great deal to make a diagram with arrows representing the various electric field contributions, and then check the signs of your components against these arrows.

Let Q1 = 1 µC, Q2 = 10 µC, and Q3 = -5µC.
(a) Find the electric field at the location of Q1, due to Q2 and Q3.
< ________ , ________ , ________ > N/C
(b) Use the electric field you calculated in part (a) to find the force on Q1.
< ________ , ________ , ________ > N
(c) Find the electric field at location A, due to all three charges.
< ________ , ________ , ________ > N/C
(d) An alpha particle (He2+, containing two protons and two neutrons) is released from rest at location A. Use your answer frompart (c) to determine the initial acceleration of the alpha particle.
< ________ , ________ , ________ > (m/s)^2

 

Two thin hollow plastic spheres, about the size of a ping-pong ballwith masses (m1=m2 = 2e-3 kg) have been rubbed with wool. Sphere 1has a charge q1 = -3e-9 C and is at location < 20e-2, -20e-2, 0> m. Sphere 2 has a charge q2 = -3e-9 C and is at location <-30e-2, 20e-2, 0> m. It will be useful to draw a diagram of thesituation, including the relevant vectors.
What is the relative position vector pointing from q1 to q2?
= < , , > m
What is the distance between q1 and q2?
|| = m
What is the unit vector in the direction of ?
= < , , >
What is the magnitude of the gravitational force exerted on q2 byq1?
|grav on q2| = N
What is the gravitational force (vector) exerted on q2 by q1?
grav on q2 = < , , > N

What is the electric force (vector) exerted on q2 by q1?
electric on q2 = < , , > N

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