Question

Two point charges lie on the x-axis. A charge of -5.5 microcoulombs is at the origin,...

Two point charges lie on the x-axis. A charge of -5.5 microcoulombs is at the origin, and a charge of +4.5 microcoulombs is at x = 10.0 cm.

a. what is the net electric field at x = -4.0 cm?

b. what is the net electric field at x = +4.0 cm?

Homework Answers

Answer #1

We know that

E = kQ/R^2

And direction of electric field is away from positive charge and towards negative charge.

Part A.

At x = -4 cm

due to Q1, E will be in +ve x-axis and due to Q2, E will be in -ve x-axis

Enet = E1 - E2

Enet = kQ1/R1^2 - kQ2/R2^2

R1 = 4 cm & R2 = 14 cm

Enet = 9*10^9*5.5*10^-6/0.04^2 - 9*10^9*4.5*10^-6/0.14^2

Enet = 28.87*10^6 N/C toward +ve axis

Part B.

At x = +4 cm

due to Q1, E will be in -ve x-axis and due to Q2, E will be in -ve x-axis

Enet = - E1 - E2

Enet = -kQ1/R1^2 - kQ2/R2^2

R1 = 4 cm & R2 = 6 cm

Enet = -9*10^9*5.5*10^-6/0.04^2 - 9*10^9*4.5*10^-6/0.06^2

Enet = -42.19*10^6 N/C

Enet = 42.19*10^6 N/C toward -ve axis

Please Upvote.

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A) Two point charges lie on the x axis. A charge of 9.8 μC is at...
A) Two point charges lie on the x axis. A charge of 9.8 μC is at the origin, and a charge of -5.3 μC is at x = 10 cm . At what position x would a third charge q3 be in equilibrium? B)Two point charges lie on the x axis. A charge of 6.5 μC is at the origin, and a charge of -9.0 μC is at x=10.0cm. What is the net electric field at x=−4.0cm? What is the...
Two point charges lie on the x axis. A charge of +6.37 uC is at the...
Two point charges lie on the x axis. A charge of +6.37 uC is at the origin, and a charge of -9.54 uC is at x = 12.0 cm. What is the net electric field at x = -3.89 cm? What is the net electric field at x = +3.89 cm?
Two point charges lie on the x axis. A charge of 6.2 μC is at the...
Two point charges lie on the x axis. A charge of 6.2 μC is at the origin, and a charge of -9.5 μC is at x=10.0cm What is the net electric field at x=−4.0cm ? What is the net electric field at x=+4.0cm ?
Two point charges lie on the x axis. A charge of 6.0 μC is at the...
Two point charges lie on the x axis. A charge of 6.0 μC is at the origin, and a charge of -9.6 μC is at x=10.0cm. You may want to review (Pages 671 - 675) . What is the net electric field at x=−4.0cm? Express your answer using two significant figures. What is the net electric field at x=+4.0cm?
Two point charges lie on the x axis. A charge of 6.1 μC is at the...
Two point charges lie on the x axis. A charge of 6.1 μC is at the origin, and a charge of -9.4 μCis at x=10.0cm. You may want to review (Pages 671 - 675) . Part A What is the net electric field at x=−4.0cm? Express your answer using two significant figures. Part B What is the net electric field at x=+4.0cm? Express your answer using two significant figures.   
Two point charges lie on the x axis. A charge of 9.0 μC is at the...
Two point charges lie on the x axis. A charge of 9.0 μC is at the origin, and a charge of -5.5 μC is at x = 10 cm . A) At what position x would a third charge q3 be in equilibrium? B) Does your answer to part A depend on whether q3 is positive or negative? Explain.
Initially two positive charges lie on the x-axis: qA is at the origin and qB is...
Initially two positive charges lie on the x-axis: qA is at the origin and qB is at (23.8 cm,0). The electric field created by these charges is zero at (6.13 cm,0). Now the charge on qA is reversed (from positive to negative). Find the x-coordinate of the point on the x-axis where the electric field is zero now, in cm. Your answer must include the sign of the x-coordinate. HINT: Which charge is larger?
Two point charges lie on the x axis. A charge of + 2.30 pC is at...
Two point charges lie on the x axis. A charge of + 2.30 pC is at the origin, and a charge of − 4.80 pC is at x=−12.0cm. What third charge should be placed at x=+22cmx=+22cm so that the total electric field at x=+11.0cmx=+11.0cm is zero?
Two point charges lie on the x axis. A charge of + 2.60 pC is at...
Two point charges lie on the x axis. A charge of + 2.60 pC is at the origin, and a charge of − 4.80 pC is at x=−13.0cm. What third charge should be placed at x=+20cm so that the total electric field at x=+10.0cm is zero? Express your answer to three significant figures and include appropriate units
Two point charges lie on the x axis. A charge of 9.5 μC is at the...
Two point charges lie on the x axis. A charge of 9.5 μC is at the origin, and a charge of -4.8 μC is at x = 10 cm.At what position x would a third charge q3 be in equilibrium? Express your answer using two significant figures.Give answer in cm
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT