Search: positive point charge q1, a second point charge q2 that may be positive or negative, a

Number of results: 55,818

physics
A point charge with charge q1 is held stationary at the origin. A second point charge with charge moves from the point (x1,0) to the point (x2,y2). How much work is done by the electrostatic force on the moving point charge? Express your answer in joules. Use k for Coulomb'...
Monday, January 24, 2011 at 10:57pm by Cassie

physics
A point charge with a charge of q1=2.60uC is held stationary at the origin. A second point charge with charge q2=-4.70uC moves from the point. x=0.140m, y=0 to the point x=0.230m, y=0.290m How much work is done by the electric force on q2?
Wednesday, February 22, 2012 at 8:43am by Celine

physics
A point charge with charge Q1 is held stationary at the origin. A second point charge with charge moves from the point (x1, 0) to the point (x2,x2 ).
Friday, January 21, 2011 at 1:13am by Cassie

physics
a point charge q1= -4.00nC is at a point (0.6,0.8) in the xy axis, and a second point charge q2=4.73nC is at the point (0.6,0), calculate the magnitude and direction of the net electric field at the origin due to these two points. Ive tried calculating the two separate ...
Monday, December 5, 2011 at 2:17pm by mo

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 ...
Tuesday, January 24, 2012 at 10:36am by Anne

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 ...
Tuesday, April 23, 2013 at 9:45pm by wendlen

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 ...
Thursday, March 29, 2012 at 8:20pm by Kelly

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 ...
Thursday, January 6, 2011 at 3:55pm by michelle

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 ...
Friday, March 30, 2012 at 10:32am by matt

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 &...
Saturday, October 1, 2011 at 2:12pm by Kelli

Physic
A point charge q1=-8 is located at the orgin of a rectangular coordinate system. A second charge q2=6nC is located at a distance of 0.2m from the orgin on the positive x-axis, and a third charge q3=12nC is located at a distance of 0.2m on the positive y-axis. Find the ...
Wednesday, March 14, 2012 at 2:02am by Nikki

physics
Three point charges lie in a straight line along the y-axis. A charge of q1 = -9.20 µC is at y = 6.60 m, and a charge of q2 = -8.00 µC is at y = -3.90 m. The net electric force on the third point charge is zero. Where is this charge located?
Tuesday, April 23, 2013 at 9:39pm by wendlen

Phyiosics
Three point charges lie in a straight line along the y-axis. A charge of q1 = -9.50 µC is at y = 6.30 m, and a charge of q2 = -7.20 µC is at y = -4.00 m. The net electric force on the third point charge is zero. Where is this charge located? y = m
Sunday, December 19, 2010 at 7:38pm by Ed

physics
Three point charges lie in a straight line along the y-axis. A charge of q1 = -9.80 µC is at y = 6.00 m, and a charge of q2 = -8.20 µC is at y = -4.10 m. The net electric force on the third point charge is zero. Where is this charge located?
Monday, April 29, 2013 at 7:30pm by John Miller

physics
Electric field at a distance r from a charge q is given by Coulomb's law: E = k q / r^2 To get the E-field, you have to add the contribution of 3 charges: E1 = k q1 / r1^2 E2 = k q2 / r2^2 E3 = k q3 / r3^2 You can look at the geometry and so simple addition and subtraction...
Tuesday, April 23, 2013 at 9:45pm by Rachael

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
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
Three point charges are arranged along the x axis: q1 = −4.43 nC at x1 = 199 mm, q2 = 2.33 nC at x2 = -302 mm, and a positive charge q3 at the origin. What is the value of q3 if the net force on this point charge has magnitude 4.50 µL?
Saturday, February 16, 2008 at 9:59am by Julia

Physics
Suppose a charge q is placed at point x = 0, y = 0. A second charge q is placed at point x = 6.2 m, y = 0. What charge Q must be placed at the point x = 3.1 m, y = 0 in order that the field at the point x = 3.1 m, y = 4.2 m be zero?
Sunday, July 11, 2010 at 9:43pm by laila

Physics
An electric force of 3x10^-8N is produced from an electrostatic point charge of 4x10^-10. It is 40cm from another electrostatic point charge. What is the charge of the second point?
Thursday, April 11, 2013 at 11:15pm by Andrea

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
An uncharged spherical conducting shell surrounds a charge -q at the center of the shell. The charges on the inner and outer surfaces of the shell are respectively... a] -q,-q b]+q, +q c]-q, +q d]+q,0 e]+q, -q 2) A postive point Charge is enclosed in a hollow metallic sphere ...
Thursday, February 10, 2011 at 4:14am by John

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
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

College Physics
What must be the distance in meters between point charge q1 = 25.6 µC and point charge q2 = -69.6 µC for the electrostatic force between them to have a magnitude of 8.50 N?
Friday, July 6, 2012 at 10:34pm by Stephanie3

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 are arranged along the x-axis. Charge q1 = +2.75 µC is at the origin, and charge q2 = -5.25 µC is at x = 0.220 m. Charge q3 = -6.50 µC. Where is q3 located if the net force on q1 is 7.50 N in the −x-direction?
Sunday, January 27, 2013 at 8:57pm by figo

physics
The electric field at the point x = 5.00cm and y = 0 points in the positive x direction with a magnitude of 10.0 N/C. At the point x = 10.0cm and y = 0 the electric field points in the positive x direction with a magnitude of 16.0 N/C. Assume this electric field is produced by...
Friday, January 27, 2012 at 1:48pm by jazz

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 ...
Thursday, February 23, 2012 at 4:09pm by Kayberlynn

Physics
A point charge Q1=-2µC is located at x=0, and a point charge Q2=-8µC is placed at on the x -axis of a cartesian coordinate system.The goal of this problem is to determine the electric field,E(x)=E(x)x^ , at various points along the -axis. (a)What is E(x) (in N/C) ...
Monday, February 25, 2013 at 7:51am by Anonymous

physics
A point charge Q= 4.60 uC is held fixed at the origin. A second point charge q=1.20 uC with mass of 2.80 * 10^-4 is placed on the x-axis 0.250 m away from the origin. (b) The second point charge is released from rest. What is its speed withn its distance from the origin is (i...
Monday, January 28, 2008 at 10:23pm by J

physics
A large conducting plate of area equal to 4.0 m^2 has an evenly distributed surface charge of + 3.4 micro coulomb on its surface.A point charge of mass equal to 5.3 x 10^-6 kg and carrying a charge of 1.2 nC is held at 10 cm above the center of the plate.Determine the ...
Saturday, September 19, 2009 at 3:31pm by sandhu

Physics
A point charge Q1=−2 μC is located at x=0, and a point charge Q2=+8 μC is placed at x=−0.5 m on the x-axis of a cartesian coordinate system.The goal of this problem is to determine the electric field, E⃗ (x)=E(x)xˆ, at ...
Thursday, February 21, 2013 at 3:41am by Anonymous

physics
Two point charges, the first with a charge of +3.19×10^−6 C and the second with a charge of -4.32×10^−6 C , are separated by 28.0 cm. Find the magnitude of the electrostatic force experienced by the positive charge. Is the magnitude of the force...
Monday, January 23, 2012 at 11:32pm by Cooper

Physics
Since the E-field is pointed along the +x axis at locationa along the x axis, the point charge that causes the field but also be on the x axis. The distance from the point charge to (5,0) must be sqrt (2/3) = 0.8165 times the distance from the point to (10,0), because the ...
Sunday, February 7, 2010 at 5:22pm by drwls

physics
q1 exerts a force on q in the positive direction, and q2 exerts a force on q in the negative direction. F = k(q1q2)/r^2 is the force exerted on one point charge by another. ΣF = k(q*q1)/(0.24)^2 - k(q*q2)/(0.37)^2 = 24. q and q1 are given. q2=?
Thursday, January 6, 2011 at 3:55pm by Marth

physics
The electric field at the point and points in the positive direction with a magnitude of 8.00 . At the point and the electric field points in the positive direction with a magnitude of 12.0 . Assume this electric field is produced by a single point charge. What is the charge ...
Tuesday, February 16, 2010 at 7:13pm by Adam

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

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

Physics
Two point charges, the first with a charge of +3.25×10−6 C and the second with a charge of -4.63×10−6 C , are separated by 25.5 cm. Find the magnitude of the electrostatic force experienced by the positive charge. Is the magnitude of the force ...
Tuesday, April 5, 2011 at 8:32pm by mink

Physics (PLEASE HELP!)
Two point charges, the first with a charge of +3.25×10−6 C and the second with a charge of -4.63×10−6 C , are separated by 25.5 cm. Find the magnitude of the electrostatic force experienced by the positive charge. Is the magnitude of the force ...
Monday, April 4, 2011 at 10:44pm by Allison

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

physics
Two point charges are located as shown in the figure, with charge q1 = +3.2 C at x = − 3.0 m, y = 0, and charge q2 = +2.5 C at x = +1.0 m, y = +2.0 m. An electron is now taken from a point very far away and placed at the origin. How much work must be done on the ...
Wednesday, September 29, 2010 at 3:16pm by melody

Physics
a charged particle is in point (2, 3, 8) and has a charge Q1 = 5x10-10C. Another particle is at (5,7,0) and has a charge Q2 = 3x10-10C. Calculate how much work needed to move the first particle to the point (0, -7.2) using the electric field
Saturday, May 12, 2012 at 6:20am by Filip

Physics
Two positive point charges are placed on the x-axis. One, of magnitude 4Q, is placed at the origin. The other, of magnitude Q is placed at x=3 m. Neither charge is able to move. Where on the x-axis in meters can I place a third positive point charge such that the magnitude of ...
Wednesday, March 27, 2013 at 11:34am by Steve

SIMPLE pHYsics....
Two positive point charges are placed on the x-axis. One, of magnitude 4Q, is placed at the origin. The other, of magnitude Q is placed at x=3 m. Neither charge is able to move. Where on the x-axis in meters can I place a third positive point charge such that the magnitude of ...
Monday, March 25, 2013 at 12:25pm by i need help from anyone!

Physics-Please help with formula
Electric field To help visualize how a charge, or a collection of charges, influences the region around it, the concept of an electric field is used. The electric field E is analogous to g, which we called the acceleration due to gravity but which is really the gravitational ...
Friday, February 25, 2011 at 4:22pm by Damon

Physics (Electricity & Magnetism))
Two positive point charges are placed on the x-axis. One, of magnitude 4Q, is placed at the origin. The other, of magnitude Q is placed at x=3 m. Neither charge is able to move. Where on the x-axis in meters can I place a third positive point charge such that the magnitude of ...
Wednesday, March 27, 2013 at 7:53am by Gurudev

ibnozohr
A point charge Q1=−2 μC is located at x=0, and a point charge Q2=+8 μC is placed at x=−0.5 m on the x-axis of a cartesian coordinate system.The goal of this problem is to determine the electric field, E⃗ (x)=E(x)xˆ, at ...
Sunday, February 24, 2013 at 2:46pm by Anonymous

Physics
The electric field at the point x=5.00 cm and y=0 points in the positive x direction with a magnitude of 10.0 N/C. At the point x=10.0 cm and the electric field points in the positive x direction with a magnitude of 16.0 N/C . Assume this electric field is produced by a single...
Monday, January 23, 2012 at 11:44pm by Cooper

Physics
A point charge Q1=-2 microcoulomb is located at x=0, and a point charge Q2=+8 microcoulomb, is placed at x=-0.5 on the x axis of a cartesian coordinate system.The goal of this problem is to determine the electric field,at various points along the x axis. a)What is electric ...
Monday, February 25, 2013 at 4:45am by Phy

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
Two point charges, the first with a charge of +3.04×10−6 C and the second with a charge of -4.63×10−6 C , are separated by 22.5 cm. Find the magnitude of the electrostatic force experienced by the positive charge. Is the magnitude of the force ...
Friday, January 27, 2012 at 1:39pm by jazz

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...
Thursday, January 17, 2013 at 5:43pm by Phil

Physics
A charge q1 = 5 ìC is at the origin. A second charge q2 = -3 ìC is on the x-axis, 0.8 m from the origin. The electric field at a point on the y-axis, 0.5 m from the origin is: I don't understand the question please help . Thanks for reading
Friday, January 18, 2013 at 9:22pm by ugh

Physics
x1=4.03 cm, x2=7.01 cm. d=? The left point is A, the right point is B. Potential due to the point charge is φ = k•q/r. Then, at the point A φ(A1) =k•q1/(d-x1), φ(A2) = -k•q2/x1, φ(A1)+ φ(A2)=0 => k•q1/(d-...
Saturday, July 14, 2012 at 1:03am by Elena

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 +36 and -16 microcoulumb are placed 10 cm apart. at a point x, there is no resultant force on positive charge. the distance of x from +36 microcoulumb charge is
Saturday, July 2, 2011 at 11:20pm by mani

Physics
Two particles are fixed along a straight line, separated by a distance 6.0 cm. The left one has a charge +2.0 nC and the right one has a charge of +6.0 nC. You must try to locate a point where the electric field is zero. (a) What is the location of the point? (b) How far from ...
Monday, January 21, 2013 at 10:45pm by John

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
The electric field at the point x=5.00 cm and y=0 points in the positive x direction with a magnitude of 10.0 N/C. At the point x=10.0 cm and y=0, the electric field points in the positive x direction with a magnitude of 15.0 N/C. Assuming the field is produced by a single ...
Sunday, February 7, 2010 at 5:22pm by Katherine

Physics
Find the electric field (in N/C) at a point r =1.4 m above a point charge Q= -78 C. Take upwards to be positive.
Monday, January 24, 2011 at 2:18pm by Nadya

physics
A positive point charge and a negative point charge have equal magnitudes. One charge is fixed to one corner of a square, and the other is fixed to another corner. On which corners should the charges be placed, so that the same potential exists at the empty corners? What is ...
Tuesday, July 8, 2008 at 9:45pm by H

math
The derivative of a function tells you the instantaneous rate of change of the function at every point. The first derivative tells you the slopes of the function The second derivative tells you the slope of the slope (aka. the concavity) First derivative = 0 or undefined =&...
Thursday, May 19, 2011 at 6:32pm by Anonymous

physics
A sphere has a radius of 0.20 meters and has a uniform surface charge density equal to 6.3 micro coulombs per meter squared. A second point charge has a magnitude of 0.58 micro coulombs and is 0.61 meters away from the center of the sphere. Find the magnitude of the force ...
Saturday, March 17, 2012 at 10:21pm by doug

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-...
Sunday, January 22, 2012 at 3:16pm by john

physics
Point charge 2.5 is located at x = 0, y = 0.30 , point charge -2.5 is located at x = 0 and y = -0.30 . What are (a)the magnitude and (b)direction of the total electric force that these charges exert on a third point charge = 5.0 at x = 0.40 , y = 0?
Monday, January 25, 2010 at 2:19pm by Derek Abeyta

physics please help!!
A charge, Q2 = -9.00x10-6 C, is 12.00 cm to the right of charge Q1 = 10.00x10-6 C. Where can a third charge be placed, along the line connecting Q1 and Q2, such that it experiences no net force? Give distances relative to Q1 and use a plus sign if the third charge is to the ...
Monday, January 23, 2012 at 3:09pm by archi

Physics
There is an electric field at a certain point P, where initially there is no charge. A point-like object is placed at point P, and a force on the object is observed. Next the object is removed and another point-like object is placed at the same point. There is a force on this ...
Friday, September 24, 2010 at 7:11pm by Max

physics
Three positive point charges of q1 = 4.0 nC, q2 = 6.4 nC, and q3 = 1.5 nC, respectively, are arranged in a triangular pattern, as shown below. Find the magnitude and direction of the electric force acting on the 6.4 nC charge.
Friday, December 17, 2010 at 5:00pm by jesse

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
A point charge of +1 µC is located at x = −2 cm and a second point charge of −8 µC is located at x = 6 cm. Where should a third charge of +1 µC be placed so that the electric ﬁeld at x = 0 cm is zero?
Tuesday, January 15, 2013 at 10:22pm by Alyssa

Physics
A point charge q = -2.41 nC is initially at rest adjacent to the negative plate of a capacitor. The charge per unit area on the plates is 4.67 μC/m2 and the space between the plates is 6.53 mm. What is the potential difference between the plates? What is the kinetic ...
Wednesday, February 1, 2012 at 8:46pm by Ashley

physics
a +35x10^-6 C point charge is placed 32 cm from an identical +32x10^-6 C charge. how much work would be required to move a +50.0x10^-6 C test charge from a point midway between them to a point 12 cm closer to either of the charges? please show work.
Friday, February 22, 2008 at 3:32pm by leesa

math!
yes. Now, you need the second derivative, which in this cae is 6x. So, at the first "critical point,-1.4, the second derivative is negative, so at that point, so it is a maximum. At the second point 1.4, the second derivative is positive, so the graph is a relative ...
Thursday, October 23, 2008 at 6:19pm by DanH

physics
A point charge of +10 micro-coulombs lies at x = -0.39 m, y = 0 m, a point charge of -5.7 micro-coulombs lies at x = +0.39 m, y = 0 m, and a point charge of +14.9 micro-coulombs lies at x = 0 m, y = -0.3 m. A point charge of +10 micro-coulombs is moves from x = 0 m, y = +0.11 ...
Friday, February 10, 2012 at 8:32am by Mandaleigh

physics
Point X and Y are 30.0 mm and 58.0 mm away from a charge of +8.0 C. a. How much work must be done in moving a +2.0 C charge from point Y to point X? b. What is the potential difference between points X and Y? c. Which point is at the higher potential?
Wednesday, May 16, 2012 at 9:37am by myra

Physics
A charge of q1=1×10−6 C is located at corner A of an equilateral triangle. A charge q2=4×10−6 C is located at corner B and a charge of q3=7×10−6 C is located at corner C. The distance AB=0.46 m (the other two sides of the ...
Sunday, March 24, 2013 at 5:39am by Phy

Physics
A proton is moving toward a charge of + 2.8 nC. On its way in to the charge it passes Point B at 4.5 cm from the charge and then passes Point A at 1.2 cm as it gets closer to the charge. a. What is the potential difference between points B and A? b. What is the change in ...
Thursday, February 10, 2011 at 10:45pm by So Confused

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

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
A point particle that has a charge of 12.5 µC is located at x = 0, y = 0 and a point particle that has a charge q is located at x = 10.0 cm, y = 0. The electric force on a point particle that has a charge of 5.0 µC at x = 20.0 cm, y = 0 is -(19.7) N . Determine the...
Tuesday, January 29, 2013 at 5:57pm by Kevin

physics E&M
I posted a question on here earlier but I wasn't able to solve from what the person had told me. An infinite line charge of uniform linear charge density lambda = -2.5 micro Coulombs lies parallel to the y axis at x = 0 m. A point charge of 3.5 micro Coulombs is located at...
Friday, January 27, 2012 at 8:00pm by aaron b. (again sorry)

physics
The point where we have to find the electric field is separated by r1 = 3.844 m from the first charge, by r2 = 0.156 m from the second charge, and by r3 =0.244 m from the third charge. E1, E2 and E3 are directed to the left. The net electric field is E =E1 +E2 +E3 = k•|q1...
Sunday, April 8, 2012 at 9:09pm by Elena

chemistry
q1 = heat required to move T from 25 to melting point of Pb. You will need to look up the melting point value. q1 = mass Pb x specific heat Pb x (Tfinal-Tinitial). q2 = heat to melt solid lead at the melting pont to liquid at the melting point. q2 = mass Pb x heat fusion. ...
Wednesday, December 8, 2010 at 9:43pm by DrBob222

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 - DAMON
a +35x10^-6 C point charge is placed 32 cm from an identical +32x10^-6 C charge. how much work would be required to move a +50.0x10^-6 C test charge from a point midway between them to a point 12 cm closer to either of the charges? so can you show me the work w/o the integrals...
Sunday, February 24, 2008 at 4:59pm by leess

Ap physics B
Four positive charges are fixed at the corners of a square, as shown above. Three of the charges have magnitude Q, and the fourth charge has a magnitude 2Q. Point P is at the center of the square at a distance r from each charge. 22. What is the electric potential at point P...
Sunday, May 15, 2011 at 2:46pm by christina

Physics
The work done by an external force to move a -7.75 µC charge from point a to point b is 25.0 * 10-4 J. If the charge was started from rest and had 4.73*10-4 J of kinetic energy when it reached point b, what is the magnitude of the potential difference between a and b?
Monday, February 22, 2010 at 10:13pm by SHUBHANGI

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