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April 28, 2016

Search: A +27 point charge is placed 6.0 from an identical +27 point charge. How much work would be required by an external force to move a +0.14 test charge from a point midway between them to a point 1.3 closer to either of the charges?

Number of results: 134,664

Math
A hardware store will deliver up to 6 items for a $25 delivery charge. There is a charge of $4 for each additional item to be delivered. a. Write a piecewise function for the cost of having x items delivered. b. What is the charge to have 14 items delivered?
February 1, 2015 by Anonymous

physics
a) You need to move a test particle across a floor. Given source that has a charge of q = 3e, What is the displacement between the source and the particle if you need the particle to travel 2.5m in t = 2.5s? Note: the source emits this charge only the INSTANT you pull the ...
July 9, 2012 by Anonymous

physics
The physics of the DNA molecule. The two strands of the DNA molecule are held together by electrostatic forces. There are four bases which make up the DNA molecule, thymine (T), adenine (A), cytosine (C), and guanine (G). In two of the bases, thymine and adenine, an oxide ion ...
April 28, 2011 by aly

plz help now, chemistry
How do you write chemical formulas? For example how so you right a chemical formula for calcium fuoride? Calcium flouride would be CaF2 This is because .. Calcium symbol - Ca Flourine symbol - F you would write CaF BUT you must consider charges calcium has a 2+ charge and ...
December 21, 2006 by Beautiful

chemsitry
What is the formal charge on each of the atoms in the Lewis structure of the PO4 (-3) charge? Draw another possible Lewis structure of the phosphate ion below. Formal charge on P is ? -how do I do this problem.
November 13, 2010 by Sarah

Physics
A plate carries a charge of -3.2 C, while a rod carries a charge of +1.5 C. How many electrons must be transferred from the plate to the rod, so that both objects have the same charge?
March 10, 2013 by Anonymous

Physics
A plate carries a charge of -2.0 C, while a rod carries a charge of +3.0 C. How many electrons must be transferred from the plate to the rod, so that both objects have the same charge?
June 22, 2014 by Anonymous

Physics
A plate carries a charge of -2.0 C, while a rod carries a charge of +3.0 C. How many electrons must be transferred from the plate to the rod, so that both objects have the same charge?
June 22, 2014 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

narayana junior college,physics
a point charge q=-8.0nC is located at origin . find electric field vector at point x=1.2m,y=-1.6m
March 31, 2012 by B.Y.SARAT

physics
1. what happens to the field strength when you halve the distance between two charges? 2. A positive charge of 3.5 uC is located in an electric field of intensity 3.00 N/C directed toward the south. Find the magnitude and the direction of the force on the test charge. 3. Three...
May 29, 2012 by carol

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

Physics
Two identical positive charges exert a repulsive force of 7.0 10-9 N when separated by a distance of 3.2 10-10 m. Calculate the charge of each. _C
April 26, 2013 by Mat

physics
Pls help me out. Four positive and equal charges are located dt the corners of a square of side 20cm.if each charge has a magnitude 2microcoulumb,calculate the force acting on the charge at the lower left corner of the square.
April 8, 2010 by Ayodele

Physics
If a current is flowing with a value of 5.9 A, how much electron charge passes any single point in 25 seconds? A) 1.9 x 1020 e
January 21, 2014 by John

Physics
The electric field strength @ distance = 1.0 m from a point charge is 4.0 x 10^4 N/C. What is the Electric field strength @ 2.0 m from the same charge?
February 27, 2013 by Anna

physics
Consider an insulating sphere with 10 microCoulombs of charge uniformly distributed through its volume. The sphere is surrounded by a conducting spherical shell that has a total charge of -3 microCoulombs. Outside the conucting shell is an insulating shell with total charge 20...
November 8, 2013 by rickross

Physics
Consider an insulating sphere with 10 microCoulombs of charge uniformly distributed through its volume. The sphere is surrounded by a conducting spherical shell that has a total charge of -3 microCoulombs. Outside the conucting shell is an insulating shell with total charge 20...
November 8, 2013 by rickross

physics
Two identical small insulating balls are suspended by separate 0.17 m threads that are attached to a common point on the ceiling. Each ball has a mass of 7.40 10-4 kg. Initially the balls are uncharged and hang straight down. They are then given identical positive charges and...
February 27, 2014 by Jen

AP Physics
Two identical, small balls are suspended by separate 0.25m threads that are attached to a common point on the ceiling. Each ball has a mass of 8.0 x 10^-4 kg. Initially the balls are uncharged and hang straight down. They are then given identical positive charges and, as a ...
April 13, 2016 by Ben

physics
two charge 5NC and -2NC are placed at a point (5cm,0,0)and (23cm,0,0)in a region of a space where there is no other electric field.calculate the electrostatic potential energy of this charged system
April 27, 2013 by prachi

11th grade physics
Two point charges q and q' are placed respectively at two points A and B. Let O be the midpoint of [AB]. Charge q placed at A creates at O an electric field of strength E=910^6 V/m. Determine the resultant electric field at O when: a) q'=q b) q'=-q
March 15, 2016 by vicky

11th grade physics
Two point charges q and q' are placed respectively at two points A and B. Let O be the midpoint of [AB].Charge q placed at A creates at O an electric field of strength E=910^6 V/m. Determine the resultant electric field at O when: a) q'=q b) q'=-q Thanks
March 15, 2016 by vicky

11th grade physics
Two point charges q and q' are placed respectively at two points A and B. Let O be the midpoint of [AB].Charge q placed at A creates at O an electric field of strength E=910^6 V/m.Determine the resultant electric field at O when: a) q'=q b) q'=-q
March 15, 2016 by vicky

Chemistry
my ap chem teacher has been absent for the past two weeks and part of the notes her sub gave us to copy says that In the equation HC2H3O2 + H20 <--> C2H3O2(- charge) + H3O(+ charge) HC2H3O2 is an acid H2O is a base C2H3O2(- charge) is the conjugate base and H3O(+ charge...
May 15, 2010 by Mark

physics
if a neutral shere and a sphere with a charge of 14 C are brought together, then separated, what would be the charge on each sphere
June 25, 2012 by charles

physics
A circular disc of radius 'r' carries uniform charge distribution of surface charge density 'A'. If the disc lies on the z = 0 plane, with its axis along the z axis, find the electric field at a point P, along the z axis that passes through the center of the disk perpendicular...
September 18, 2014 by Anupam

science
If the magnitude of the electric field in air exceeds roughly 3 X10^6 N/C, the air breaks down and a spark forms. For a two-disk capacitor of radius 52 cm with a gap of 1 mm, what is the maximum charge (plus and minus) that can be placed on the disks without a spark forming (...
February 11, 2012 by Brittney

Physics
A charge of 8.0 x 10^(-6) is located inside a sphere. What is the flux through the sphere? Im not sure if this would be just the charge over elipson0. it seems to easy...
February 3, 2015 by Brad

Physics
Two small plastic spheres are given positive electrical charges. When they are 11.0cm apart, the repulsive force between them has magnitude 0.300N. What is the charge on each sphere if one sphere has four times the charge of the other?
September 7, 2014 by Molly

physics
Force charges +q,-q,+q,-q placed at 4 corners of a square of sides 'a' calculate the resultant force on +Q charge at the intersection of 2 diagonals
March 5, 2016 by chandan

Physics
+Q charge situate at center of equilateral triangle of side 'a'. If +q charge situate at each corner of triangle. Then find the direction and magnitude of resultant force.
May 13, 2015 by Hussaina Bohra

Physics URGENT
5uC charges are at the base vertices of an equilateral triangle 0.4m on a side. What is the electric field at the third vertice? im not completely sure how to start that.. don't i need the force to calculate the x&y components? NO. Figure E directly from a charge. ...
February 2, 2007 by MatT

Physics
A charge of +2q is fixed to one corner of a square, while a charge of -3q is fixed to the diagonally opposite corner. Expressed in terms of q, what charge should be fixed to the center of the square, so the potential is zero at each of the two empty corners?
September 2, 2007 by Mary

physics
A charge of +4q is fixed to one corner of a square, while a charge of -9q is fixed to the opposite corner. Expressed in terms of q, what charge should be fixed to the center of the square, so the potential is zero at each of the two empty corners?
January 23, 2010 by Anonymous

Physics
A particle of charge +1.00 x 10e-6 C is 15.0 cm distant from a second particle of charge -3.00 x 10e-6 C. Calculate the magnitude of the electrostatic force between the particles.
February 2, 2012 by Anonymous

physics
A particle with a charge of -5.0 μC and a mass of 4.3 x 10-6 kg is released from rest at point A and accelerates toward point B, arriving there with a speed of 18 m/s. The only force acting on the particle is the electric force. What is the potential difference VB - VA ...
February 11, 2013 by Anonymous

physics
Find the magnitude and direction of the net electrostatic force exerted on the point charge q3 in the figure below, where q = +2.5 μC and d = 28 cm. The picture is of a square. q1=+q, q2=-2q, q3=-3q, q4=-4
July 17, 2011 by Chloe

physics
Find the magnitude and direction of the net electrostatic force exerted on the point charge q3 in the figure below, where q = +2.5 μC and d = 28 cm. The picture is of a square. q1=+q, q2=-2q, q3=-3q, q4=-4
July 17, 2011 by Chloe

Physics
two equal charges exert an elecrtric force on each other of 0.0385 when positioned 0.15 apart determine the magnitude of the charge on each point.
November 26, 2012 by Excelvia

physics
Three point charges are held at the corners of an equilateral triangle,if q=2 micro columb and length =3cm what is the resultant force on the +q charge
October 2, 2014 by ejekwu harmlet

Math - Credits & finance charges
On the May 1 billing date, Mary had a balance due of $970.60 on her credit card. The transactions during the following month were: May 5 Payment $400.00 May 10 Charge: airline tickets $381.00 May 22 Charge: hotel $270.60 May 25 Charge: florist $60.20 The interest rate on the ...
March 10, 2008 by Sunny

Physics-Electricity
Consider three charged particles placed along the x-axis. The particle with q1 = 9.30 nC is at x = 6.87 m and q2 = 4.09 nC is at x = 0.600 m. Where must a positive charge, q3, be placed such that the resultant force on it is zero? x=?m
August 31, 2014 by Joe

physics
Consider three identical metal spheres, A, B, and C. Sphere A carries a charge of -6q. Sphere B carries a charge of -5q. Sphere C carries no net charge. Spheres A and B are touched together and then separated. Sphere C is then touched to sphere A and separated from it. Lastly...
April 26, 2015 by Anonymous

Physics
The membrane that surrounds a certain type of living cell has a surface area of 2.13 x 10-9 m2 and a thickness of 1.94 x 10-8 m. Assume that the membrane behaves like a parallel plate capacitor and has a dielectric constant of 6.4. (a) If the potential on the outer surface of ...
February 9, 2012 by Sami

physics
The membrane that surrounds a certain type of living cell has a surface area of 4.4 x 10-9 m2 and a thickness of 1.6 x 10-8 m. Assume that the membrane behaves like a parallel plate capacitor and has a dielectric constant of 4.1. (a) The potential on the outer surface of the ...
January 18, 2013 by help

physics
The membrane that surrounds a certain type of living cell has a surface area of 4.9 x 10-9 m2 and a thickness of 1.2 x 10-8 m. Assume that the membrane behaves like a parallel plate capacitor and has a dielectric constant of 5.5. (a) The potential on the outer surface of the ...
February 18, 2013 by Shannon

Physics please clarify
A charge of +2q is fixed to one corner of a square, while a charge of -3q is fixed to the diagonally opposite corner. Expressed in terms of q, what charge should be fixed to the center of the square, so the potential is zero at each of the two empty corners? For Further ...
September 3, 2007 by Mary

physics
The accompanying diagram shows two metal shperes suspended by srtings and separated by a distance of 3.0 meters. the charge on spere A is +5.0*10^-4 coulumb and the charge on speher B is +3.0*10^-5 coulumb. which statement best describes the electrical force between the spheres?
April 18, 2013 by darla

physics
The accompanying diagram shows two metal shperes suspended by srtings and separated by a distance of 3.0 meters. the charge on spere A is +5.0*10^-4 coulumb and the charge on speher B is +3.0*10^-5 coulumb. which statement best describes the electrical force between the spheres?
April 18, 2013 by darla

physics
Consider an insulating sphere with 10 microCoulombs of charge uniformly distributed through its volume. The sphere is surrounded by a conducting spherical shell that has a total charge of -3 microCoulombs. Outside the conucting shell is an insulating shell with total charge 20...
November 10, 2013 by manu

physics
The potential V at a distance of 25.0 cm from a very small charged sphere is 48.0 V, with V taken to be zero at an infinite distance from the sphere. A) If the sphere is treated as a point charge, what is its charge? B) What is the potential at a distance of 75.0 cm from the ...
September 20, 2009 by jkiyuhglj

Physics(please help, I'm stuck)
A particle with a charge of -1.4 μC and a mass of 2.9 x 10-6 kg is released from rest at point A and accelerates toward point B, arriving there with a speed of 22 m/s. The only force acting on the particle is the electric force. What is the potential difference VB - VA ...
September 12, 2012 by Alex

physics question
The sum of the emfs and potential difference around a closed loop equals zero" is a consequence of: a) Newton's third law b) Ohm's law c) Newton's second law d) conservation of energy e) conservation of charge For this question: I had picked d conservation of energy but now I ...
March 28, 2007 by susane

physics, help! urgent!
A positive point charge q = +2.50 nC is located at x = 1.20 m and a negative charge of {2q = {5.00 nC is located at the origin. (a) Sketch the electric potential verses x for points on the x-axis in the range -1.50 m < x < 1.50 m. (b) Find a symbolic expression for the...
November 14, 2012 by Ella

chem PLEASE HELP
WHO MADE THESE ATOMIC DISCOVERIES? An atom has a nucleus that is very small In a reaction, the mass of the products must equal the mass of the reactants. Electrons are negatively charge pieces of matter. An electron has a mass that is very small compared to the size of the ...
April 14, 2011 by Sal

Physics
two equal charges exert an elecrtric force on each other of 0.0385N when positioned 0.15m apart determine the magnitude of the charge on each point.
November 26, 2012 by Nina

Physics 12
"Two small spheres are located 0.50m apart. Both have the same charge on them. If the repulsive force is 5.0N, what charge is on the spheres, in microcoulombs?" I can begin to use my electrical force formula, but then I have two unknown charges. The anwser is 12 uC, but I am ...
December 9, 2008 by solexgirl12

Physics
Three identical charges of 50 micro C are arranged at the points of an equilateral triangle 2 meters on a side. What is the net force on each charge?
March 21, 2008 by Maria Lewis

physics
Consider a parallel-plate capacitor with charge density 7.5 10-7 C/m2 on the two plates and an electric field that points in the +z direction. What magnetic field is necessary to provide a velocity selector for 58 keV deuterons that move in the +y direction? A deuteron has a ...
February 27, 2010 by Sandhya

ICS
I need help solving this question. "Two charges are 10 meters apart. The charge on the positive particle is 1.0 C and the negative charge is 10 Coulombs. Calculate the magnitude of the electrostatic force of attraction between these two charges."
January 25, 2008 by william

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

Biochemistry
1. What is the overall charge of the tripeptide below pH 1.0? 2. What is the overall charge of the tripeptide at pH 12? 3. What type of intermolecular attractions could the side chains of the amino acids make with the solvent (water) at pH 7.4? (Note that these are attractions...
October 5, 2013 by Aria

Science
1. Which statement about subatomic particles is NOT true? (1 point) Protons and neutrons have almost the same mass. Protons and electrons have opposite charges. Unlike protons and electrons, neutrons have no charge. Protons and neutrons have the same charge. 2. Which of the ...
October 10, 2008 by Chelsea

Physics
4 charges Q1=2C, Q2=3C, Q3=3C & Q4=-4C are placed at the vertices of a square of side 10cm. find the force on 5th charge Q5=1C placed at the center of square.
April 14, 2015 by Anonymous

physics/biology
Determine the number of uncompensated ions (both total number and as a percentage of the bulk ions) required to establish a charge of 100mV across a membrane of a spherical cell that is 25 m in diameter. Assume that the total number of ions inside and outside the cell is .5M...
January 30, 2007 by Ann

maths
A car hire company makes the following charges: A one-off charge of 20: A charge of 25 for each day that the car is hired. A charge of 10p for each mile that car is driven. Write down a formula that gives the total cost (C) of hiring a car for D days and driving M miles...
May 9, 2007 by kat

Physics
Three charged particles are arranged on corners of a square as shown in the figure below, with charge -Q on both the particle at the upper left corner and the particle on the lower right corner, and charge +2Q on the particle at the lower left corner. (i) What is the direction...
May 21, 2015 by Anonymous

Physics
2. Charge q1 is located at (0,+30 cm). Charge q2 is located at (0, -30 cm) q1 = +25 pC q2= -75 pC A) Calculate the potential energy of the charges B) Calculate V1, the electric potential at the orgin due to charge q1, and V2, the electric potential at the orgin due to charge ...
April 12, 2011 by YoungTangerine

physics
An object has a charge of −2.4 C. How many electrons must be removed so that the charge becomes +2.8 C
January 18, 2013 by Anonymous

Physics
If the thickness of the probe in the direction of B is 1.97 mm, calculate the charge-carrier density (each of charge e).
August 2, 2014 by Thomas

Physics
Original Question: Neutral metal sphere A, of mass 0.10kg, hangs from an insulating wire 2.0m long. An identical metal sphere B, with charge -q is brought into contact with sphere A. Sphere A goes 12 degrees away from Sphere B. Calculate the initial charge on Sphere B. Note: ...
May 4, 2008 by Alex

Physics
Original Question: Neutral metal sphere A, of mass 0.10kg, hangs from an insulating wire 2.0m long. An identical metal sphere B, with charge -q is brought into contact with sphere A. Sphere A goes 12 degrees away from Sphere B. Calculate the initial charge on Sphere B. Note: ...
May 4, 2008 by Alex

physics
There are two conducting spheres of different sizes, both with the same negative charge. If they are connected with a conducting wire, the charge would therefore flow from the smaller to the larger. Am I correct? Thanks!
March 7, 2010 by Joe

Physics
A uranium nucleus (mass 238 u, charge 92e) decays, emitting an alpha particle (mass 4 u, charge 2e) and leaving a thorium nucleus (mass 234 u, charge 90e). At the instant the alpha particle leaves the nucleus, the centers of the two are 5.5fm apart and essentially at rest. ...
February 26, 2015 by Nguyen Nguyen

Physics
A rod has a charge of -2.0 C. How many electrons must be removed so that the charge becomes +3.3 C
April 19, 2010 by Arnold Manguy

physics
The ratio og intantanous charge and maximum charge on the plates of capacitor at T=RC is ??
September 7, 2015 by Muqadas

physics
The ratio of instantanious charge and maximum charge on the plates of capacitor at T=RC is ??
September 7, 2015 by Muqadas kainat

physics
Two infinitely-long lines of charge run parallel to the z axis. One has positive unifonn charge per unit length, IvO, and goes through the x y plane at x=O, y=s/2. The other has negative unifonn charge per unit length, -A, and goes through x=O, y=-s/2. Nothing changes with the...
October 20, 2008 by Eric

physics
3 identical charges each having charge 10 coulomb are placed at the corners of an equilateral triangle of side 20cm find the electric field at the centre of triangle
April 16, 2013 by aditi

English
No charge does it mean free example: Art Gallery of Queensland - No charge please help
April 4, 2009 by Cyrus

physics
An electron floats at rest above a sheet of charge with uniform charge density x. What is x in C/m^2
October 21, 2013 by Saiba

physics
The charge carried by one electron is e = -1.6 10-19 C. The number of electrons necessary to produce a charge of -1.0 C is:
March 13, 2014 by shirly

Value of a Charge of a Body (Physics 11th Grade)
What is the value of a charge of a body that carries 20 excess electrons? I think that the question asks you to pretend that something is negatively charged by 20 electrons. So I think you take the charge of an electron, which is 1.6 x 10^-19, and multiply it by 20. If you do ...
February 25, 2011 by Angela

physics
Two identical small insulating balls are suspended by separate 0.23-m threads that are attached to a common point on the ceiling. Each ball has a mass of 8.70 10-4 kg. Initially the balls are uncharged and hang straight down. They are then given identical positive charges and...
September 3, 2009 by teri

Physics
Figure (a) shows charged particles 1 and 2 that are fixed in place on an x axis. Particle 1 has a charge with a magnitude of |q1| = 12.0e. Particle 3 of charge q3 = +13.0e is initially on the x axis near particle 2. Then particle 3 is gradually moved in the positive direction ...
January 20, 2012 by Phil

Physics
Figure (a) shows charged particles 1 and 2 that are fixed in place on an x axis. Particle 1 has a charge with a magnitude of |q1| = 12.0e. Particle 3 of charge q3 = +13.0e is initially on the x axis near particle 2. Then particle 3 is gradually moved in the positive direction ...
January 20, 2012 by Phil

MAT101
6. Suppose you have a lemonade stand, and when you charge $2 per cup of lemonade you sell 100 cups. But when you raise your price to $4 you only sell 50 cups. Write an equation for the number of cups you sell as a function of the price you charge. Denote "C" for number of cups...
February 25, 2010 by SEMA

Physics
suppose that two point charges each with a charge of +1 coulomb are seperated by a distance of 1 meter will they attract or repel ? determine the magnitude of the electrical force between them
January 16, 2013 by Quinn

Physics
suppose that two point charges each with a charge of +1 coulomb are seperated by a distance of 1 meter will they attract or repel ? determine the magnitude of the electrical force between them
January 16, 2013 by Anonymous

Physics
Three point charges are located at the corners of an equilateral triangle as in the figure below. Find the magnitude and direction of the net electric force on the 0.70 C charge. (A = 0.70 C, B = 6.50 C, and C = -3.90 C.)
March 30, 2013 by Yannic

Please help Physics!!!
Two infinitely-long lines of charge run parallel to the z axis. One has positive unifonn charge per unit length, IvO, and goes through the x y plane at x=O, y=s/2. The other has negative unifonn charge per unit length, -A, and goes through x=O, y=-s/2. Nothing changes with the...
October 20, 2008 by Jorge Wero

science
two small spheres lie 1.5 meters apart and carry identical charges. How large is the charge on each if a sphere experiences a force of 2.0 N.
February 24, 2015 by Matthew

Physics
two small spheres lie 1.5 meters apart and carry identical charges. How large is the charge on each if a sphere experiences a force of 2.0 N.
February 24, 2015 by Joe

Conservation Charge- Physics
Please help me with this question. What particle has exactly one quantums unit of charge?
November 5, 2007 by JoAnne

Physics/Chemistry
Does an electroscope losing its charge by being grounded violate the law of conservation of charge?
May 5, 2012 by Helen

Chemistry
Does Cl2 (chlorine) have a -2 charge or -4 charge since there are 2 of them?
October 26, 2009 by Holly Y.

physics
two small objects, A and B, are fixed in place and separated by 3.00 cm in a vacuum. object A has a charge of +2.00 micro coulomb , and object B has a charge of -2.00 micro coulomb. how many electrons must be removed from A and put onto B to make the elecrtostatic force that ...
April 26, 2010 by kim

chemistry
Gallium Arsenide ---------------- The charge carrier density of GaAs at 31o C is 2.25x106 cm-3. What is the charge carrier density (in cm-3) at 175oC? (The bandgap of GaAs is 1.42 eV. ) I am trying with arrhenius relationship but get confused over "charge carrier density"
August 25, 2014 by WIlliam

Algebra
A phone company charges $30 per month for a long distance plan plus a charge of $.05 per minute. What would the monthly charge be for someone who talked two and a half hours?
August 8, 2014 by Rebecca

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