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September 24, 2014

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

Number of results: 38,683

Physics
A positive charge of 3.0e-6 C is pulled on by two negative charges. One, -1.9e-6 C, is 0.045 m to the north and the other, -3.7e-6 C, is 0.030 m to the south. What total force is exerted on the positive charge? F=kqq/d^2 You would have to find the F exerted by each. The first ...
January 13, 2008 by Sarah

3 physics question please help quick
Two point charges of opposite sign are brought close together. Which statement best describes the field lines of the combined point charges? (Points : 1) The field lines from the positive charge point toward the negative charge. The field lines from the positive charge point ...
April 21, 2014 by Sara

Physics (PLEASE HELP!)
Two point charges, the first with a charge of +3.2510−6 C and the second with a charge of -4.6310−6 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 experienced by the ...
April 4, 2011 by Allison

Physics
Two point charges, the first with a charge of +3.2510−6 C and the second with a charge of -4.6310−6 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 experienced by the ...
April 5, 2011 by Diddy

Physics
Two point charges, the first with a charge of +3.2510−6 C and the second with a charge of -4.6310−6 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 experienced by the ...
April 5, 2011 by mink

physics
Two point charges, the first with a charge of +3.1910^−6 C and the second with a charge of -4.3210^−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 experienced by the ...
January 23, 2012 by Cooper

phisycal sciences
Which of the following properties did Rutherford use in his experiment? A. the negative charge of the alpha particles and the random distribution of protons B. the negative charge of the alpha particles and the positive charge of the gold foil C. the positive charge of the ...
May 3, 2012 by david

physics
Consider three charges q1 = 6.0 C, q2 = 1.8 C, and q3 = -2.8 C, 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 ...
April 23, 2013 by wendlen

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

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

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

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

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

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

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

physics
Two charges are fixed in place with a separation d. One charge is positive and has nine times (n = 9) the magnitude of the other charge, which is negative. The positive charge lies to the left of the negative charge. Relative to the negative charge, locate the two spots on the...
February 4, 2007 by Ann

Physics
A thick metal slab carries a current I as shown. A uniform magnetic field B points perpendicular to the slab (and into the page). If point P on the slab is at a higher potential than point Q , what can we say about the charge carriers that produce the current in the slab? a....
December 16, 2013 by Hola

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...
January 27, 2012 by jazz

science question
Histones interact with DNA at specific loci because DNA has phosphate functional groups. This interaction occurs because histones have a net _____ positive charge, which derives from their ______ residues, and interact with DNA because of its net _______ charge. a. negative, ...
July 21, 2006 by Sara

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 ...
December 5, 2011 by mo

physics
Two point charges, the first with a charge of +3.0410−6 C and the second with a charge of -4.6310−6 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 experienced by the ...
January 27, 2012 by jazz

Physics
Review Conceptual Example 7 as background for this problem. Two charges are fixed in place with a separation d. One charge is positive and has twice (n = 2) the magnitude of the other charge, which is negative. The positive charge lies to the left of the negative charge, as in...
September 3, 2012 by Brandi

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's ...
January 24, 2011 by Cassie

physics
Three equal positive point charges of magnitude Q = 4.00 C are located at three corners of a square of edge length d = 6.9 cm. A negative charge -14.00 C is placed on the fourth corner. At the position of the negative charge, what is the magnitude of the electric field due ...
January 21, 2010 by farah

physics
Three equal positive point charges of magnitude Q = 8.00 C are located at three corners of a square of edge length d = 11.8 cm. A negative charge -24.00 C is placed on the fourth corner. At the position of the negative charge, what is the magnitude of the electric field due ...
September 1, 2011 by TP

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 ...
February 10, 2011 by John

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 ...
September 6, 2013 by Sarah

science
three point charges are located on the positive y-axis of a coordinate system.charge q1 = -2.09 nC is 2.05 m from the origin and charge q2 = +2.70 nC is 3.25 m from the origin, and the third charge q3 = -2.56 nC is located 5.03 m on the positive y-axis.the fourth charge q4 = -...
July 23, 2014 by glen

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 ...
March 14, 2012 by Nikki

physics
A 8.95 μC point charge is glued down on a horizontal frictionless table on the right. If is tied to a -6.35 μC point charge by a light nonconducting wire with length 2.5 cm on the left. The charges are placed in a external, uniform electric field with magnitude 1.65 ...
February 3, 2014 by Anonymous

Science Question for Lance
Histones interact with DNA at specific loci because DNA has phosphate functional groups. This interaction occurs because histones have a net _____ positive charge, which derives from their ______ residues, and interact with DNA because of its net _______ charge. a. negative, ...
July 22, 2006 by sara

Physics
A)When point charges q1 = +1.5 C and q2 = +5.7 C 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 C at y1 = +0.21 m ...
October 1, 2011 by Kelli

Physics PLs DAMON HELP
A thick metal slab carries a current I as shown. A uniform magnetic field B points perpendicular to the slab (and into the page). If point P on the slab is at a higher potential than point Q , what can we say about the charge carriers that produce the current in the slab? a....
December 16, 2013 by ashish

PHYSICS
The electric field everywhere on the surface of a thin, spherical shell of radius 0.710 m is measured to be 860 N/C and points radially toward the center of the sphere. (a) What is the net charge within the sphere's surface?nC (b) What can you conclude about the nature and ...
September 8, 2013 by gita

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?
February 22, 2012 by Celine

Physics Please help3
A point charge with charge q1 = 3.10μC is held stationary at the origin. A second point charge with charge q2 = -4.60μC moves from the point ( 0.160m , 0) to the point ( 0.270m , 0.255m ). How much work W is done by the electric force on the moving point charge? ...
May 21, 2014 by Josh

Physics
Two particles, one with negative charge -Q and the other with positive charge +2Q, are seperated by a distance d. Both charges lie on the x-acis with the negative charge at x=0. At what point(s) along the line joining the particles is the potential equal to zero? At what point...
July 17, 2012 by Michael

physics
A positive charge of 1.100 C is located in a uniform field of 1.10~105 N/C. A negative charge of -0.100 C is brought near enough to the positive charge that the attractive force between the charges just equals the force on the positive charge due to the field. How close ...
September 1, 2011 by Anonymous

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 ...
July 8, 2008 by H

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 ...
February 1, 2012 by Ashley

physics
What can we conclude from the attractive nature of the force between a positively charged rod and an object? 1. The object has no net charge. 2. Cannot be determined. 3. The object does not have an appreciable negative charge. 4. The object does not have an appreciable ...
February 20, 2010 by Anonymous

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 ...
March 25, 2013 by i need help from anyone!

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 ...
March 27, 2013 by Anonymous

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 ...
March 27, 2013 by Steve

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 ...
March 27, 2013 by Gurudev

Physics
Four coulombs of positive charge flow from the +6 V positive terminal of a battery to the negative terminal at 0V. What is the charge in potential energy of the charge.
January 19, 2011 by Adriana

Phyiscs - due at 11PM EST!!
Two identical conducting spheres, fixed in place, attract each other with a force of 0.114 N when their center to center separation is 45.00 cm. The spheres are then connected by a thin conducting wire. When the wire is removed, the spheres have a net positive charge and repel...
April 12, 2011 by Bill

Chemistry Dipole Moments
How do you tell which end of a polar bond is positive or negative? My book says that a molecule such as Hf has a center of positive charge a center of negative charge. But in S--O, how do you tell which end is positive, and which is negative.
April 12, 2010 by Emma

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 ).
January 21, 2011 by Cassie

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 x...
January 27, 2012 by aaron b. (again sorry)

physics
What can we conclude from the attractive nature of the force between a positively charged rod and an object? 1. The object has no net charge. 2. Cannot be determined. 3. The object does not have an appreciable negative charge. 4. The object does not have an appreciable ...
February 20, 2010 by Anonymous

physics
if a negative charge particle is placed on the left side and a higher positive charge particle is placed on the right side, why is the location that makes electric field zero is on the left of negative charge rather than in between or on the right of positive charge
August 3, 2010 by blast

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 ...
February 16, 2010 by Adam

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 L?
February 16, 2008 by Julia

Physics
Two charges are arranged on the x axis so that there is a positive charge of 3.6 micro C at the orgin and a negative charge of -2.5 micro C located 2 centimeters to its right. to the nearest centimeter, where on the x axis should a positive charge be placed so that the net ...
March 21, 2008 by Maria Lewis

Physics
Two charges are arranged on the x axis so that there is a positive charge of 3.6 micro C at the orgin and a negative charge of .2.5 micro C located 2.5 centimeters to its right. to the nearest cetimeter, where on the x axis should a positive charge be placed so that the net ...
March 21, 2008 by Maria Lewis

physics
have homework due soon, need help thanks. Two point charges are placed on the x axis.(Figure 1) The first charge, q1 = 8.00nC , is placed a distance 16.0m from the origin along the positive x axis; the second charge, q2 = 6.00nC , is placed a distance 9.00m from the origin ...
February 4, 2014 by jrfannin

Physics
Two tiny spheres, one with a charge of -17mc and the other with a charde of +3mc are positioned with the positive charge 14cm above the negative. What is the magnitude and direction of the force on the negative charge?
April 13, 2012 by Anonymous

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 ...
July 14, 2012 by CombatVetUSMC

Physics
A positive charge +q is located to the left of a negative charge -q. On a lne passing through the two charges there are two places where the total potential is zero. The first place is between the charges and is 3.8 cm to the left of the negative charge. The second place is 7....
January 24, 2011 by Sam

physic
A +4 C point charge is in the x-y plane at the point (3.0 m, 0.0m) while a +10 C point charge is at the point (0.0 m, 1.0 m). (a) Express the Coulomb force on the +10 C point charge due to the +4 C charge in vector notation. (b) What is the magnitude of the force. Note: ...
January 31, 2014 by Asude

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...
January 23, 2012 by Cooper

physics
If the total positive charge is Q = 1.6210−6C , what is the magnitude of the electric field caused by this charge at point P, a distance d = 1.53m from the charge? (Figure 1) Enter your answer numerically in newtons per coulomb.
January 27, 2014 by James

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 ...
September 19, 2009 by sandhu

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 ...
September 19, 2009 by sandhu

physics 2
Three charges are placed on the y axis. One charge of -3.2 micro-Coulombs is placed at y = 0, another charge of +2.6 micro-Coulombs is placed at y = -0.29 meters, and another unknown charge is placed at y = +0.51 meters. The total force on the charge at y = 0 due to the other ...
January 18, 2013 by Jessica

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
July 2, 2011 by mani

physics
You pick up a charge of one micro-Coulomb while walking over carpet, how many electrons were transferred? (Order of magnitude only) TRUE OR FALSE: If a third charge is released in the middle between the two positive charges, independent of the magnitude of the charges, it will...
January 10, 2011 by Jaden

Physics
A 6 C charge is placed at the origin and a second charge is placed on the x-axis at x = 0.34 m. If the resulting force on the second charge is 4.0 N in the positive x-direction, what is the value of its charge?
July 14, 2011 by Cynthia

physics
A positive point charge = 2.110−5 is fixed at the origin of coordinates, and a negative point charge = −5.410−6 is fixed to the axis at . abeer abdullah Part A Find the location of the place along the axis where the electric field due to these two charges ...
March 6, 2010 by sami

Physics
Charge A and charge B are 2.00 m apart, and charge A is +3.90 C and charge B is +4.00 C. Charge C is located between them at a certain point and the force on charge C is zero. How far from charge A is charge C?
July 16, 2010 by Bill

physics
A positive charge of q = 2.6 C is pulled on by two negative charges. As shown below, one, −2.0 C, is 0.050 m to the north and the other, −4.0 C, is d = 0.029 m to the south. What total force is exerted on the positive charge?
January 22, 2009 by Mara

physics
A test charge (q=-5uC) lies between two positive charges: 3cm from a 2uC positive charge, and 2 cm from a 3uC positive charge. Find the force and direction (in newtons) on the test charge. I know I have to use Coulomb's law: so: F = KQ/r^2 = 8.99e9*2e-6/.03^2 F = 8.99e9*3e-6/....
September 16, 2007 by Beth

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 ...
February 7, 2010 by Katherine

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?
April 11, 2013 by Andrea

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...
January 28, 2008 by J

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 ...
September 24, 2010 by Max

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. ...
July 18, 2012 by JJ

elect and magn
a postive charge of q is located at x=0 and y=-a, and a negative charge -q is located at the point x=0 and y=+a. A.) derive an expression for the potential V at points on the y-axis as a function of the coordinate y. take V to be zero at an infinite distance from the charges. ...
February 28, 2012 by Anonymous

physics
Two point charges are placed on the x axis. (Figure 1) The first charge, q1 = 8.00nC , is placed a distance 16.0m from the origin along the positive x axis; the second charge, q2 = 6.00nC , is placed a distance 9.00m from the origin along the negative x axis. Calculate the ...
February 4, 2014 by jrfannin

Physics Help Please
particle 1 of charge q1 = 6.6010-5 C and particle 2 of charge q2 = 3.3010-4 C are fixed to an x axis, separated by a distance d = 0.100 m. Calculate their net electric field E(x) as a function of x for the following positive and negative values of x, taking E to be positive ...
September 17, 2013 by HP

Electr. and Magnetism
1) A charge of 80nC is uniformly distributed along the x-axis from x= 0 to x= 2.0m. Determine the magnitude of the electric field at a point on the x-axis with x=8.0m. a] 30 N/C b] 15 N/C c] 48 N/C d] 90 N/C e] 60 N/C 2) 3 point charges, 2 positive and one negative, each ...
January 31, 2011 by Allan

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?
July 11, 2010 by laila

Physics
Consider the electric field created by a very long charged line of negative linear charge density -2.50 nC/m. A small positive point charge of 7 mC moves from a distance of 9 cm to a distance of 17 cm. How much work is done by the electric field?
February 11, 2010 by Joanna

Science
Use the electron theory to explain how one object can be negatively charged and another can be positively charged. help If electrons are negative, removing them will leave a net positive charge (net meaning fewer negative electrons than postivite protons). Remember, in normal ...
November 29, 2006 by Nicka

Physic II
A dipole with a positive charge at x=0.0 nm, y=10.0 nm and a negative charge at x=0.0 nm, y = -10.0 nm. If the charge have a value equivalent to that of a proton and an electron,respectively, what is the dipole moment?
February 2, 2014 by Banu

Physics
In a crystal of salt there are electrons and positive ions. How does the net charge of the electrons compare with the net charge of the ions? 1. Unable to determine 2. Sometimes the net charge of the negative electrons is greater than the net charge of the ions and sometimes ...
February 7, 2013 by Tiffany

physics
What does the concentration of field lines represent? Answer a. The direction that a positive test charge will be pushed. b. The direction that a negative test charge will be pushed. c. The strength of the force on a positive test charge. d. The strength of the force on a ...
October 15, 2010 by jim

physics
What does the concentration of field lines represent? Answer a. The direction that a positive test charge will be pushed. b. The direction that a negative test charge will be pushed. c. The strength of the force on a positive test charge. d. The strength of the force on a ...
October 15, 2010 by jim

Physics 2
A pair of charges exert attractive forces of magnitude 2.4*10^-2 N on each other when they are separated by 2.0 m. The total charge of the pair is +3.0 Micro Coulomb. What is the charge on the object with positive/negative charge?
September 1, 2011 by Wilson

Phizzics....
Both positive and negative charges produce electric fields. Which direction, toward or away from itself, does the field point for each charge?
May 15, 2012 by matin

physics
Two point charges +4q and +q are placed 30 cm apart. At what point on the line joining them is the electric field zero? (a) 15 cm from charge 4q (b) 20 cm from charge 4q (c) 7.5 cm from charge q (d) 5 cm from charge q
May 11, 2011 by ashley --- HELP PLEASEE!!!

physics
Two point charges +4q and +q are placed 30 cm apart. At what point on the line joining them is the electric field zero? (a) 15 cm from charge 4q (b) 20 cm from charge 4q (c) 7.5 cm from charge q (d) 5 cm from charge q
May 11, 2011 by ashley --- HELP PLEASEE!!!

physics
A positive charge q1 = 2.70 uC on a frictionless horizontal surface is attached to a spring of force constant k as in the figure. When a charge of q2 = 8.60 uC is placed 9.50 cm away from the positive charge, the spring stretches by 5.00 mm, reducing the distance between the ...
November 7, 2012 by Brette

physics
Consider a charge of +2.0 C placed at the origin of an X-Y co-ordinate system and a charge of -4.0 C placed 40.0 cm to the right. Where must a third charge be placed between the charges, to the left of the origin, or beyond the second charge to experience a...
May 15, 2012 by matin

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

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

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

physics
Three point charges have equal magnitudes, two being positive and one negative. These charges are fixed to the corners of anequilateral triangle. The magnitude of each charge is 5 microCouloumbs, and the lengths of the sides of the triangle are 3.0cm.Calculate the magnitude of...
July 27, 2010 by ness

Physics
An infinitely long line charge of uniform linear charge density λ = -3.00 C/m lies parallel to the y axis at x = -2.00 m. A point charge of 4.70 C is located at x = 1.50 m, y = 2.50 m. Find the electric field at x = 2.50 m, y = 2.00 m. I added the vectors, of the ...
October 10, 2011 by Tom

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