Homework Help: Physics - please help!

Posted by Char on Sunday, April 3, 2011 at 10:49pm.

Particles 1 and 2 of charge q1 = q2 = +3.20 x 10-19 C are on a y axis at distance d = 22.0 cm from the origin. Particle 3 of charge q3 = +9.60 x 10-19 C is moved gradually along the x axis from x = 0 to x = +5.0 m.

At what value of x will the magnitude of the electrostatic force on the third particle from the other two particles be maximum?

What is the maximum magnitude?

Physics - please help! - drwls, Monday, April 4, 2011 at 1:58am
Is particle 2 at x = 0, y = -22 cm?

If so, the net force on P3, F3, is always along the x axis, and is zero at x=0.

F3 = 2*k*q1*q3*x/(x^2 + a^2)^3/2
where a = 22 cm

Maximum force occurs where dF3/dx = 0

I get it to be where x = 22 cm/sqrt2 = 15.55 cm

See what you get, and use the equation above to get the maximum force F3

Answer this Question

Related Questions

Phyiscs - Electro static - Particles 1 and 2 of charge q1 = q2 = +3.20 x 10-19 C...
phyysics-please help! - an arrangement of four charged particles, with angle &...
physics-help - In the figure below, four particles are fixed along an x axis, ...
College Physics - Two particles are fixed to an x axis: particle 1 of charge q1...
AP Physics B - Two point charges Q1 and Q2, are located a distance .20 meter ...
physics please help!! - A charge, Q2 = -9.00x10-6 C, is 12.00 cm to the right of...
Physics - Q1 and Q2 are charged objects of the same sign separated by a distance...
physics- check - 1. three point charges, q1, q2, q3, lie along the x-axis at x...
Physics - Three charges q1, q2 and q3 lie along the x-axis. Charge q1=2.5 micro ...
Physics - Can you please provide me a starting point for these two questions ...

For Further Reading

First Name:
School Subject:
Answer: