Friday

April 18, 2014

April 18, 2014

Number of results: 82,381

**LSU **

Two point charges Q1 = -26.8 micro-Coulombs and Q2 = +38.5 micro-Coulombs are located on a vertical line with Q1 below Q2. The coordinates of Q1 is (0.0, -6.8 cm). The two charges are 28.6 cm apart. Determine the coordinates of the location where the net electric field due to ...
*Tuesday, September 11, 2012 at 6:26pm by Garrett*

**Physics**

You are given two unknown point charges, Q1 and Q2. At a point on the line joining them, one-third of the way from Q 1 to Q2, the electric field is zero. Are Q1 and Q2 like or unlike charges? How many times greater is Q2 than on Q1? I am really confused on this problem. Please...
*Thursday, February 22, 2007 at 4:16pm by Nat*

**Physics**

Two point charges q1 and q2 are held 4.00 cm apart vertically. An electron released at the middle point that is equidistant from both charges undergoes an initial acceleration of 8.95 X 10^18 m/s2 directly upward,parallel to the line connecting q1 and q2 .Find the magnitude ...
*Sunday, September 6, 2009 at 10:43pm by sandhu*

**Physics**

Two point charges q1 and q2 are held 4.00 cm apart vertically. An electron released at the middle point that is equidistant from both charges undergoes an initial acceleration of 8.95 X 10^18 m/s2 directly upward,parallel to the line connecting q1 and q2 .Find the magnitude ...
*Monday, September 7, 2009 at 1:08pm by sandhu*

**Physics**

The Superpostion Principle: Three point charges q1, q2 and q3 like along the x-axis at x=0, x=3.0cm and x=5.0cm, respectively. calculate the magnitude and direction of the electric force on each of the three point charges when q1 = +6.0 microcoulombs q2= +1.5 microcoulombs and...
*Wednesday, May 16, 2012 at 5:59pm by Kelsi*

**Physics**

Two point charges q1 and q2 are held 4.00 cm apart vertically. An electron released 3 cm from the middle point that is equidistant from both charges undergoes an initial acceleration of 8.95 X 10^18 m/s2 directly upward,parallel to the line connecting q1 and q2 .Find the ...
*Monday, September 7, 2009 at 1:08pm by sandhu*

**Physics**

Two point charges q1 and q2 are held 4.00 cm apart vertically. An electron released 3 cm from the middle point that is equidistant from both charges undergoes an initial acceleration of 8.95 X 10^18 m/s2 directly upward,parallel to the line connecting q1 and q2 .Find the ...
*Monday, September 7, 2009 at 1:17pm by sandhu*

**emily**

What is the potential halfway between two point charges spaced 1 mm apart if q1=10 micro culumbs and q2= -5 micro culumbs
*Wednesday, February 15, 2012 at 8:28pm by physics*

**Physics**

Four identical charges (+1.6 ìC each) are brought from infinity and fixed to a straight line. Each charge is 0.36 m from the next. Determine the electric potential energy of this group. i placed the charges as follow q1 q2 q 3 q4 and used q1 as the starting point so EPE = 0 ...
*Thursday, September 21, 2006 at 10:43pm by Kevin*

**physics HELP MEEE SO CONFUSED**

What is the potential halfway between two point charges spaced 1 mm apart if q1=10 micro culumbs and q2= -5 micro culumbs
*Wednesday, February 15, 2012 at 9:03pm by bel *

**potential**

What is the potential halfway between two point charges spaced 1 mm apart if q1=10 micro coulumbs and q2= -5 micro coulumbs?
*Thursday, February 16, 2012 at 11:38am by anne*

**Physics**

Two point charges q1 and q2 are held 4.00 cm apart. An electron released at a point that is equidistant from both charges undergoes an initial acceleration of 8.95 X 10^18 m/s2 directly upward,parallel to the line connecting q1 and q2
*Sunday, September 6, 2009 at 10:43pm by sandhu*

**Physics please help **

What is the potential halfway between two point charges spaced 1 mm apart if q1=10 micro coulombs and q2= -5 micro coulombs? Attempt at solution: no idea but need to get this right our homework is graded
*Wednesday, February 15, 2012 at 9:30pm by bel *

**physics**

1) The potential at location A is 441 V. A positively charged particle is released there from rest and arrives at location B with a speed vB. The potential at location C is 805 V, and when released from rest from this spot, the particle arrives at B with twice the speed it ...
*Thursday, September 21, 2006 at 3:38am by Aki*

**Physics**

A)When point charges q1 = +1.5 ìC and q2 = +5.7 ìC are brought near each other, each experiences a repulsive force of magnitude 0.77 N. Determine the distance between the charges. B)Two point charges are fixed on the y axis: a negative point charge q1 = -29 ìC at y1 = +0.21 m ...
*Saturday, October 1, 2011 at 2:12pm by Kelli*

**physics**

Let the two charges be Q1 and Q2 Q1 + Q2 = 277 µC k*Q1*Q2 /R^2 = 20.8 Newtons Two equations; two unknowns. k is the Coulomb constant. Look it up if you need to. R = 2.00 m Take it from there; it's just algebra.
*Tuesday, January 25, 2011 at 5:52pm by drwls*

**Physics**

Can you please provide me a starting point for these two questions Question One: Three charges are located on the +x axis as follows: q1 = +26 µC at x = 0 m, q2 = +13 µC at x = +2.0 m, and q3 = +42 µC at x = +3.5 m. (a) Find the electrostatic force (magnitude and direction) ...
*Thursday, August 30, 2007 at 9:46pm by Jim*

**electrostatics**

Use Coulomb's law: F=Q1*Q2/(4πr²ε0) Where Q1, Q2 are magnitudes of point charges r=distance between Q1 and Q2 ε0 = 8.854*10-12 So we conclude that the forces between point charges are directly proportional to the product of the charges, and inversely ...
*Monday, September 20, 2010 at 10:17am by MathMate*

**PHYSICS**

Two point charges q1 &q2 seperated by a distance of 3.0 m experience a mutual force of 16x10^-15N.Calculate the magnitude of charge when q1=q2=q. What will be magnitude of force if seperation between the charges is changed to 6.0m?
*Monday, June 3, 2013 at 4:10am by Megha*

**physics 2**

A charge, q1, of +4.4 micro-coulombs and another unknown charge, q2, are surrounded by a surface. The total flux through the surface is -9.2 x 106 (N m2)/C. These charges are now placed on the x axis. q1 is placed at x = 0, and q2 is placed at x = +114.51 cm. What is the ...
*Friday, January 25, 2013 at 2:42pm by Jessica *

**AP Physics B**

Two point charges Q1 and Q2, are located a distance .20 meter apart, as shown above. Charge Q1 = +8.0μC. The net electric field is zero at point P, located .40 meter from Q1 and .20 meter from Q2. Determine the magnitude and sign of charge Q2.
*Wednesday, February 6, 2013 at 6:57pm by Alix*

**Physics**

Three charges q1, q2 and q3 lie along the x-axis. Charge q1=2.5 micro coulomb is at x= 1.5 m, while charge q2= 6.3 micro coulomb is at the origin. Where must the third charge q3 be placed on the axis so that the resultant force on it is zero?
*Thursday, August 18, 2011 at 3:57pm by Hilary*

**Physics**

The drawing shows a positive point charge +q1, a second point charge q2 that may be positive or negative, and a spot labeled P, all on the same straight line. The distance d between the two charges is the same as the distance between q1 and the spot P. With q2 present, the ...
*Friday, September 6, 2013 at 1:57pm by Sarah*

**physics (electricity)**

Let the two charges be Q1 and Q2. In this case, Q2 = 505*10^-6 - Q1 Since the force is replusive, they both have the same sign. Coulomb's Law tells you that 19.3 N = k*Q1*Q2/R^2, where R = 1.1 m Substitute 505*10^-6 - Q1 for Q2 and solve for Q1. You will have to look up k. It ...
*Sunday, August 29, 2010 at 10:28am by drwls*

**physics**

Two point charges, q1 and q2, are placed 0.30 m apart on the x-axis, as shown in the figure above. Charge q1 has a value of –3.0 x 10–9 C. The net electric field at point P is zero Q: Calculate the magnitude of charge q2. Q: Calculate the magnitude of the electric force on q2 ...
*Thursday, February 23, 2012 at 4:09pm by Kayberlynn*

**Physics**

Calculate the coulomb force on q. They are all in a straight line q1, q2,q3. Q1:1.05 micro coulombs Q2:5.51 micro coulombs Q3:-2.15 micro coulombs The distance, r1, between q1 and q2 is 20.1cm. The distance, r2, between q2 and q3 is 15.3 cm. Also, calculate e coulomb force on q2
*Tuesday, July 9, 2013 at 9:21am by Amalia*

**physics**

Three charges are arranged in a line. From left to right, the charges are: Q1= -8mC, Q2 = +3mC and Q3 = -4mC. The distance between Q1 and Q2 is 0.3 m, and the distance between Q2 and Q3 is 0.2 m. Calculate the net electrostatic force on Q3. how can you find what point Q2 will ...
*Monday, January 3, 2011 at 5:23pm by seb*

**Physics**

The force of charges interaction is F = k•q1•q2/r^2 = k•q1•q2/(d^2+4^2) = k•q1•q2/(d^2+16). X- projection is Fx= k•q1•q2/(d^2+16) •cosα = k•q1•q2/(d^2+16) •d/(d^2+16)^1/2. We have to find the derivative of Fx. (Fx)´ = k•q1•q2[(d^2+16)^-3/2 – 3d• (d^2+16)^-5/2] = 0 ...
*Saturday, April 7, 2012 at 6:12pm by Elena*

**physics**

Two identical small spheres possessing charges q1 and q2 are separated by distance r. Which change would produce the greatest increase in the magnitude of the electrostatic force that one sphere exerts on the other? 1) doubling charge q1 2) doubling r 3) doubling r and charge ...
*Thursday, February 9, 2012 at 8:53pm by simin*

**physics**

The drawing shows three point charges fixed in place. The charge at the coordinate origin has a value of q1 = +8.70 µC; the other two charges have identical magnitudes, but opposite signs: q2 = -4.50 µC and q3 = +4.50 µC. Determine the net force (magnitude and direction) ...
*Wednesday, September 2, 2009 at 9:40pm by amber*

**physics**

The drawing shows three point charges fixed in place. The charge at the coordinate origin has a value of q1 = +8.70 µC; the other two charges have identical magnitudes, but opposite signs: q2 = -4.50 µC and q3 = +4.50 µC. Determine the net force (magnitude and direction) ...
*Wednesday, September 2, 2009 at 9:40pm by amber*

**physics**

what is the electric field at the position 20 cm from Q2 and 60 cm from Q1? Q2=40 micro coulombs Q1=20 micro coulombs Q2 and Q1 are separated by 80 cm
*Wednesday, May 2, 2012 at 7:20pm by quinton*

**physics**

Two point charges Q1= -25uC and Q2= 50uC are separated by a distsance of 12cm the electric field at the point P is zero how far from Q1 is P?
*Wednesday, August 31, 2011 at 7:07pm by Anonymous*

**Physics**

Two point charges are fixed on the y axis: a negative point charge q1 = -26 µC at y1 = +0.21 m and a positive point charge q2 at y2 = +0.38 m. A third point charge q = +8.5 µC is fixed at the origin. The net electrostatic force exerted on the charge q by the other two charges ...
*Monday, January 23, 2012 at 5:13pm by Anne*

**Physics**

Two point charges are fixed on the y axis: a negative point charge q1 = -26 µC at y1 = +0.21 m and a positive point charge q2 at y2 = +0.38 m. A third point charge q = +8.5 µC is fixed at the origin. The net electrostatic force exerted on the charge q by the other two charges ...
*Tuesday, January 24, 2012 at 10:36am by Anne*

**Physics**

Two point charges are fixed on the y axis: a negative point charge q1 = -26 µC at y1 = +0.21 m and a positive point charge q2 at y2 = +0.30 m. A third point charge q = +8.5 µC is fixed at the origin. The net electrostatic force exerted on the charge q by the other two charges ...
*Friday, September 6, 2013 at 3:30pm by Sarah*

**Physics**

Let x be the distance between Q1 and the point where the electric field is 0. Then the distance between Q2 and this point is 2x E = 0 = k*Q1/x^2 + k*Q2 / (2x)^2 = k*Q1/x^2 +k*Q2 / 4x^2 or k*Q1/x^2 = - k*Q2/4x^2 This can only happen if one of Q1 and Q2 is negative, and one is ...
*Thursday, February 22, 2007 at 4:16pm by Jennifer*

**physics**

When point charges q1 = +5.4 ìC and q2 = +8.3 ìC are brought near each other, each experiences a repulsive force of magnitude 0.69 N. Determine the distance between the charges. i used the eqution F=k(q1)(q2)/r^2 . i got 7.64E5 but it is not right .can you please help
*Sunday, September 18, 2011 at 6:05pm by kim taylor*

**physics**

Two point charges are fixed on the y axis: a negative point charge q1 = -22 µC at y1 = +0.24 m and a positive point charge q2 at y2 = +0.37 m. A third point charge q = +7.7 µC is fixed at the origin. The net electrostatic force exerted on the charge q by the other two charges ...
*Thursday, January 6, 2011 at 3:31pm by michelle*

**physics**

Two point charges are fixed on the y axis: a negative point charge q1 = -22 µC at y1 = +0.24 m and a positive point charge q2 at y2 = +0.37 m. A third point charge q = +7.7 µC is fixed at the origin. The net electrostatic force exerted on the charge q by the other two charges ...
*Thursday, January 6, 2011 at 3:55pm by michelle*

**physics **

Two point charges are fixed on the y axis: a negative point charge q1 = -23 µC at y1 = +0.23 m and a positive point charge q2 at y2 = +0.33 m. A third point charge q = +7.8 µC is fixed at the origin. The net electrostatic force exerted on the charge q by the other two charges ...
*Thursday, March 29, 2012 at 8:20pm by Kelly*

**physics **

Please Help, Two point charges are fixed on the y axis: a negative point charge q1 = -23 µC at y1 = +0.23 m and a positive point charge q2 at y2 = +0.33 m. A third point charge q = +7.8 µC is fixed at the origin. The net electrostatic force exerted on the charge q by the other...
*Friday, March 30, 2012 at 10:32am by matt *

**Physics**

Two point charges, Q1 = -7.0 and Q2 = 2.0 are located between two oppositely charged parallel plates, as shown in the figure . The two charges are separated by a distance of x = 0.33m . Assume that the electric field produced by the charged plates is uniform and equal to E = 6...
*Monday, August 29, 2011 at 8:52pm by Jessica*

**physics **

Two charges are separated by a distance d = 5 m. The charge q1 has a charge of q1= 7.0 µC (microcoulombs) and q2 has a charge of q2= 6.8 µC. What is the force between the charges?
*Sunday, May 1, 2011 at 8:41pm by marissa*

**physics**

the point where Q2 will be at equilibrium? The forces on each side are equal and opposite. Now Q1 is neg, Q2 is positive, so the force on Q2 will be to the left. But Q2 is +, and Q3 is negative, so the force on Q2 will be to the right. so the idea is to set the two forces ...
*Monday, January 3, 2011 at 5:23pm by bobpursley*

**physics **

Suppose the charge q2 can be moved left or right along a line connecting charges q1 and q3. Given that q = +15 µC, find the distance from q1 where q2 experiences a net electrostatic force of zero? (The charges q1 and q3 are separated by a fixed distance of 36 cm.) q1=+q, q2=-2...
*Sunday, January 13, 2013 at 5:40pm by stoic-rider77*

**Physics**

Two point charges, Q1 = -6.7 µC and Q2 = 1.2 µC are located between two oppositely charged parallel plates. The two charges are separated by a distance of x = 0.32 m. Assume that the electric field produced by the charged plates is uniform and equal to E = 75000 N/C. Calculate...
*Tuesday, January 29, 2008 at 9:04pm by Peace*

**Physics**

Three charges (q1=1 μC, q2=−2 μC, q3=3 μC) are located at the corners of an equilateral triangle with sides of length one meter. The 3 μC charge is: Repelled by q1 and attracted by q2. Attracted by q1 and repelled by q2. Attracted by both q1 and q2. ...
*Friday, February 22, 2013 at 8:21am by P*

**Physics**

In a vacuum, two particles have charges of q1 and q2, where q1 = +3.7 µC. They are separated by a distance of 0.22 m, and particle 1 experiences an attractive force of 3.5 N. What is q2 (magnitude and sign)?
*Wednesday, January 8, 2014 at 2:27am by Dee*

**physic**

two point charges, Q1=-25microcoulomb and Q2=+50 microcoulomb, are separated by a distance of 12 cm. the electric field at the point P is zero. how far from Q1 is P? @__________@_______________________@ P -25 +50
*Saturday, January 22, 2011 at 7:20am by fara*

**Physics**

Two point charges Q1 and Q2 are 4C. They are 10cm apart. At what distance betwen the charges the net electric field will be zero?
*Sunday, January 8, 2012 at 7:43am by Nuwaya*

**Physics**

Two spheres of charge q1 and q2 that are equal in magnitude (i.e. |q1| = |q2|) are attached by a spring with a constant k = 1440kg/s2 and a rest length of x0 = 83.0cm. We take negative values of Äx for compression and positive Äx values for expansion. Knowing that q1 is ...
*Thursday, January 17, 2013 at 5:43pm by Phil*

**Physics**

A positive charge +q1 is located to the left of a negative charge -q2. On a line passing though the two charges, there are two places where the total potential is zero. The first place is between the charges and is 4.03 cm to the left of the negative charge. The second place ...
*Saturday, July 14, 2012 at 1:03am by CombatVetUSMC*

**Physics 2 Charges what is the magnitude at point P**

Two charges, Q1= 3.20 microCoulombs, and Q2=5.90 microCoulombs, are located at points (0,-2.00cm) and (0,+2.00cm. What is the magnitude of the electric field at point P, located at (5.00cm,0), due to Q1 alone?
*Friday, February 11, 2011 at 8:34pm by Mike*

**PHYSICS**

Two point charges are placed on the x axis as follows: Charge q1= 4.20 is located at x= 0.185 , and charge q2= 4.80 is at x= -0.280 . What are the magnitude and direction of the net force exerted by these two charges on a negative point charge A = -0.625placed at the origin?
*Wednesday, September 19, 2012 at 11:53pm by Anonymous*

**Physics**

Two charges are placed between the plates of a parallel plate capacitor. One charge is +q1 and the other is q2= +5.00x10^-6 C . The charge per unit area on each plate has a magnitude of sigma=1.30 x 10^-4 C/m^2. The force on q1 due to q2 equals the force on q1 due to the ...
*Wednesday, February 6, 2008 at 7:15pm by Trevor*

**Physics**

Two charges are placed between the plates of a parallel plate capacitor. One charge is +q1 and the other is q2= +5.00x10^-6 C . The charge per unit area on each plate has a magnitude of sigma=1.30 x 10^-4 C/m^2. The force on q1 due to q2 equals the force on q1 due to the ...
*Wednesday, February 6, 2008 at 7:29pm by Trevor*

**physics**

Consider three charges q1 = 6.0 µC, q2 = 1.8 µC, and q3 = -2.8 µC, arranged as shown below. Q1 is positive and is 3 cm away from Q2. Q2 is also positive and is 2 cm away from Q3 which is negative. (a) What is the electric field at a point 1.0 cm to the left of the middle ...
*Tuesday, April 23, 2013 at 9:45pm by wendlen*

**Physics**

(a) Net charge, q1 + q2, stays the same. (b) Since they are the same size and become equipotential by touching, the final q1' and q2' are equal. Call that charge q q1 + q2 = 2q q1' = q2' = (q1 + q2)/2
*Tuesday, March 19, 2013 at 7:02am by drwls*

**physics**

find the force exerted by these two equal charges by using f=(1/4*pi*epsilon)*(q1*q2)/r^2 if f1 is the force exerted by one charge q1 and f2 be the force exerted by another charge q2 which are equal in their magnitude(as you've mentioned) then f1=f2=f. i.e, f1 and f2 are equal...
*Monday, January 21, 2008 at 12:34pm by aayush*

**physics**

Since q1 and q2 are positive charges, q3 in its equilibrium position has to be between them at the distance “x” from the charge q1. F1=F2. Use Coulomb’s Law F1= k•q1•q3/x², F2 = k •q2•q3/(r-x)², k•q1•q3/x²= k •q2•q3/(r-x)², q1 /x²= q2 /(r-x)². ...
*Tuesday, May 1, 2012 at 5:06pm by Elena*

**physics**

Since q1 and q2 are positive charges, q3 in its equilibrium position has to be between them at the distance “x” from the charge q1. F1=F2. Use Coulomb’s Law F1= k•q1•q3/x², F2 = k •q2•q3/(r-x)², k•q1•q3/x²= k •q2•q3/(r-x)², q1 /x²= q2 /(r-x)². ...
*Tuesday, May 1, 2012 at 8:38pm by Elena*

**Physics**

Since q1 and q2 are positive charges, q3 in its equilibrium position has to be between them at the distance “x” from the charge q1. F1=F2. Use Coulomb’s Law F1= k•q1•q3/x², F2 = k •q2•q3/(r-x)², k•q1•q3/x²= k •q2•q3/(r-x)², q1 /x²= q2 /(r-x)². ...
*Tuesday, May 1, 2012 at 9:36pm by Elena*

**physics**

Three charges are arranged in a line. From left to right, the charges are: Q1= -8mC, Q2 = +3mC and Q3 = -4mC. The distance between Q1 and Q2 is 0.3 m, and the distance between Q2 and Q3 is 0.2 m. Calculate the net electrostatic force on Q3.
*Tuesday, December 28, 2010 at 5:31pm by gayathri*

**physics**

a point charge q2 equals negative 2.1 micro C is fixed at the origin of a coordinate system. another point charge q1 equals 4.1 micro C is initially located at point p a distance d1 equals 6.1 centimeters from the origin along the x axis
*Wednesday, February 8, 2012 at 9:32pm by john*

**physics**

Three point charges, q1, q2, and q3, lie along the x-axis at x=0, x=3 cm, and x=5 cm, respectively. Calculate the magnitude and direction of the electric force on each of the three points when q1=+6.0 muC, q2=+1.5 muC, and q3=-2.0 muC. I would add the forces. Watch direction. ...
*Wednesday, April 11, 2007 at 7:25pm by Mischa*

**Physics**

There is a formula for the force (F) between two charges (Q1 and Q2), separated by a distance R. It is called Coulomb's Law. It must be in your text or notes; otherwise they would not have assigned this problem. The formula says F = k Q1*Q2/R^2 where k is a constant that ...
*Thursday, October 13, 2011 at 8:15am by drwls*

**Physics**

Three point charges, +6.7e-6, +2.5e-6, and -3e-6, lie along the x-axis at 0 cm, 2.4 cm, and 5.7, repectively. What is the force exerted on q1 by the other two charges? (to the right is positive) . The coulomb constant is 8.99*10^9 N*m^2/C^2 What is the force exerted on q2 by ...
*Tuesday, May 1, 2012 at 9:43pm by Justin*

**physics **

Suppose the charge q2 in the figure below can be moved left or right along the line connecting the charges q1 and q3. Given that q = +15 µC, find the distance from q1 where q2 experiences a net electrostatic force of zero? (The charges q1 and q3 are separated by a fixed ...
*Saturday, January 12, 2013 at 9:14pm by stoic-rider77*

**physic**

two point charges are placed on teh x axis as follows: charge q1 = +4.00 nc is located at x = 0.200 m, and charge q2 = +5.00 nc is at x = -0.300 m what ae the magnitude and direction of teh net force exerted by these two charges on a negative point charges q3 = -0.600 nc ...
*Wednesday, February 13, 2013 at 8:09pm by yanis*

**science**

Two point charges are placed on the x-axis a follows: charge q1= +4.00nC is located at x=0.200m, and charge q2= +5.oonC is at x=-0.300m. What are the magnitude and direction of the total force exerted by these two charges on a negative point charge q3= -6.00nC that is placed ...
*Thursday, December 13, 2012 at 9:56am by jay*

**physic**

two point charges are placed on the x axis as follows: charge q1 +4.00nc is located at x = 0.200m, and charge q2 = +5.00nc is at x = -0.300m what are the magnitude and directionof the net force exerted by these two charges on a negative point charge q3 = -0.600nc placed at the...
*Tuesday, February 12, 2013 at 5:05pm by yanis*

**physics**

Three point charges are fixed in place in a right triangle. What is the electric force on the q = -0.63 µC charge due to the other two charges? (Let Q1 = +0.83 µC and Q2 = +0.9 µC.) what is the magnitude N, and direction in degrees ° above the positive x-axis?
*Sunday, January 22, 2012 at 3:16pm by john*

**physics**

Two point charges are placed on the x axis as follows: Charge q1= +4.00 nC is located at x= 0.200 m, and charge q2= +5.00nC is at x= -0.300 m. What are the magnitude and direction of the net force exerted by these two charges on a negative point charge q3= -0.600 nC placed at ...
*Monday, January 21, 2008 at 12:50pm by Jen*

**ICS**

Use Coulomb's Law F = k Q1 Q2/R^2 k = 8.99*10^9 N/m^2 C^2 Q1 = 1 C Q2 = 10 C R = 10 m Your answer will be in Newtons. Never mind the minus sign on Q2. The force F will be an attraction since the charges are opposite.
*Friday, January 25, 2008 at 6:49pm by drwls*

**Physics**

W=1,300 J Q2=6,100 J Q1 =? W=Q1-Q2 Q1=W+Q2 efficiency =(Q1-Q2)/Q1 =W/Q1
*Monday, November 26, 2012 at 4:27pm by Elena*

**Physics**

There are four charges, each with a magnitude of 2.65 microcoulombs. Two are positive and two are negative. The charges are fixed to the corners of a 0.408-m square, one to a corner, in such a way that the net force on any charge is directed toward the center of the square. ...
*Wednesday, July 18, 2012 at 7:52pm by JJ*

**PHYSICS**

The potential energy due to the Coulomb replsion force is -k Q1 Q2/R at separation distance. k is the Coulomb constant and Q1 and Q2 are the two positive nuclear charges. When the nuclei are at closest separation distance d, the relative velocity is zero. You can ignore the ...
*Thursday, April 10, 2008 at 1:35am by drwls*

**physics please help**

Three point charges, 5.6E-6, 2.2E-6, and -3.0E-6, lie along the x-axis at 0.00 m, 0.031 m, and 0.059 m. What is the force exerted on q1 by the other two charges? What is the force exerted on q2 by the other forces? And what is the force exerted on q3 by the other two charges? ...
*Tuesday, March 22, 2011 at 6:40pm by alisha*

**Physics**

question 9 a: Ec1=Voltage/plate separation b: because the battery is connected the E field does not change c: when the battery is disconnected then Q1+Q2 must equal Q1'+Q2' Ec1=Q1'/(k*C1*d) and Ec2=Q2'/(C2*d) where Q1'=(Q1+Q2)/(1+(C2/K*C1) and Q2'=C2/(K*C1)*(Q1+Q2)/(1+(C2/K*C1))
*Saturday, June 15, 2013 at 4:36am by boss*

**physic**

two point charges are located on the y axis as follows : charge q1 = -1.50nc at y= -0.600m, and charge q2 = +3.2nc at the origin (y=0) what is the net force (magnitude and direction) exerted by these two charges on a third charge q3 = +5.00 nc located at y = -0.400 m ?
*Tuesday, February 12, 2013 at 5:03pm by yanis*

**physics**

three point charges are located at the corners of a right triangle where q1=q3= 5uC,Q2= -2uC and r =10cm.(angle q1 q2q3=90 and q1q3=r)
*Saturday, September 25, 2010 at 9:08pm by kevin*

**physics**

three point charges are located at the corners of a right triangle where q1=q3= 5uC,Q2= -2uC and r =10cm.(angle q1 q2q3=90 and q1q3=r)
*Saturday, September 25, 2010 at 10:52pm by kevin*

**Physics- Coulomb's Law**

1) Particles of charge Q1 = +77 µC, Q2 = +44 µC, and Q3 = -80 µC are placed in a line. The center one (Q2) is 0.35 m from each of the others. Calculate the net force on Q1 and Q2 due to the other charges. a) Force on Q1 Magnitude b) Force on Q2 Magnitude 2) A charge of 3.9 nC ...
*Monday, April 29, 2013 at 10:08pm by Kristal*

**physics**

a charge Q1 Lcm away from Q2. At what point on the line joining the two charges the electric field is zero
*Tuesday, December 1, 2009 at 11:42am by Sanusi T Sununu*

**Physics**

The drawing shows a square, each side of which has a length of L = 0.25 m. Two different positive charges q1 and q2 are fixed at the corners of the square. Find the electric potential energy of a third charge q3 = -5 x 10-9 C placed at corner A and then at corner B. q1= 1.5e-9...
*Wednesday, March 20, 2013 at 7:30pm by Sarah*

**PHYSICS HELP!**

The drawing shows a square, each side of which has a length of L = 0.25 m. Two different positive charges q1 and q2 are fixed at the corners of the square. Find the electric potential energy of a third charge q3 = -5 x 10-9 C placed at corner A and then at corner B. q1= 1.5e-9...
*Wednesday, March 20, 2013 at 9:31pm by Sarah*

**physics**

When point charges q1 = +8.9 µC and q2 = +5.4 µC are brought near each other, each experiences a repulsive force of magnitude 0.71 N. Determine the distance between the charges.
*Thursday, September 1, 2011 at 9:20pm by Eric Gordon*

**Physics/Charges**

Point charges Q1 = 50 µC and Q2 = -20 µC are placed 2 meters apart. Where can I put a third charge so that the net electrical force on it is zero?
*Monday, February 4, 2013 at 9:22pm by Lindsey*

**physics**

Three concentric metallic sphere shells of radii R,2R,3R are given charges Q1,Q2,Q3 respectively. It is found that the surface charge densities on the outer surfaces of the shells are equal. What is the ratio of the charges given to the shells Q1,Q2,Q3?
*Friday, April 13, 2012 at 9:56am by sarthak *

**Physics II**

Two charges, Q1= 3.20 microCoulombs, and Q2=5.90 microCoulombs, are located at points (0,-2.00cm) and (0,+2.00cm. What is the magnitude of the electric field at point P, located at (5.00cm,0), due to Q1 alone?
*Friday, February 11, 2011 at 7:25pm by John*

**Physics**

When point charges q1=+8.4uC and q2=+5.6uC are brought near each other, each experiences a repulsive force of magnitude 0.66N. Determine the distance between the charges.
*Wednesday, August 28, 2013 at 9:08am by sarah*

**Physics**

When point charges q1=+8.4uC and q2=+5.6uC are brought near each other, each experiences a repulsive force of magnitude 0.66N. Determine the distance between the charges.
*Wednesday, August 28, 2013 at 9:14am by sarah*

**Physics**

When point charges q1=+8.4uC and q2=+5.6uC are brought near each other, each experiences a repulsive force of magnitude 0.66N. Determine the distance between the charges.
*Wednesday, August 28, 2013 at 9:15am by sarah*

**physics**

Two identical charges, q1 = q2 = 6.0 C, are separated by 1.0 m. a. Calculate the electric field and electric potential difference at point P, midway between them. b. Replace one of the charges with a charge of the same magnitude but opposite sign and repeat the ...
*Tuesday, May 15, 2012 at 7:36pm by myra*

**Physics**

Two charges, -2.0 micro C and -6.0 micro C, are located at (-0.65 m, 0) and (0.65 m, 0), respectively. There is a point on the x-axis between the two charges where the electric field is zero. Find the location of the point where the electric field is zero.
*Saturday, March 26, 2011 at 2:56pm by Ben*

**physics**

Use Coulomb’s Law F= k•q1•q2/r^2 The for the first question: F1 = k•q1•q2/(2r)^2 Find the ratio F1/F = (k•q1•q2)• r^2/(k•q1•q2)• (2r)^2 =1/4. F1 =F/4=5/4=1.25 N . …. Act like that for other cases.
*Friday, March 30, 2012 at 4:00pm by Elena*

**why doesn't anybody ever help me.**

1. three point charges, q1, q2, q3, lie along the x-axis at x = 0,3,5, respectively. Calculate the magnitude and direction of the net electric force on q1 if q1 = +6 x 10^-6 C, q2 = +1.5 X 10^-6 C and q3 = -2.0 x 10^-6 C. my answre is 46.8 N to the right. is that correct? 2. a...
*Thursday, February 14, 2008 at 9:03pm by todi*

**physics- check**

1. three point charges, q1, q2, q3, lie along the x-axis at x = 0,3,5, respectively. Calculate the magnitude and direction of the net electric force on q1 if q1 = +6 x 10^-6 C, q2 = +1.5 X 10^-6 C and q3 = -2.0 x 10^-6 C. my answre is 46.8 N to the right. is that correct? 2. a...
*Thursday, February 14, 2008 at 6:28pm by todi*

**Physics/Math help please**

You seem to have left out part of the question. How is x defined? Is it the distance from q1 at which the forces on a third charge cancel? If so, all you can solve for is x/s (or s/x), not x itself. q2/q1 = (s-x)^2/x^2 = [(s/x)-1]^2 (s/x) - 1 = sqrt (q2/q1) s/x = 1 + sqrt (q2/q1)
*Friday, February 13, 2009 at 10:08pm by drwls*

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