Sunday
February 7, 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: 131,374

Physics
An electrostastic force of 20.0 newtons is exerted on a charge of 8.00 x 10^/2 C at point P in an electric field. The magnitude of the electric field strength at P is Given: Fe = 20 B q = 8.00 x 10^/2 C
February 5, 2010 by Priscilla

jphysics
the chapter is on electric fields and forces and I cannot figure these 3 answers out: Matt forgot to put the fabric softener in the wash. As his socks tumbled in the dryer, they became charged. If a small piece of lint with a charge of +1.25 E -19 C is attracted to the socks ...
May 22, 2011 by Kelli Kenyon

Physics
Find the distance light travels from its starting point, S to its final point, F by traveling two different paths: Reflecting from point A, and reflecting from point B. From point S to A is 30 cm, from point A to B is 30 cm, from point B to F is 30 cm, and from the mirror to ...
March 9, 2008 by Tom

Physics
A non-conducting ring of radius R with a uniform charge density λ and a total charge Q is lying in the yz - plane, as shown in the figure below. Consider a point P, located at a distance x from the center of the ring along its axis of symmetry. 1) What is the magnitude (...
February 21, 2013 by Anonymous

phySICS
PHYSICS when a positive charge moves under the influence of an electric field's electrostatice force, what happens to the electrical potential energy of that charge?
March 29, 2011 by TS

calculus
You operate a bakery. You buy cakes from a supplier who charges you $5 per cake. Government regulations dictate that you can only charge a price between $10 and $20 per cake. Your research shows that if you were to charge $x per cake, you would sell 125 - x2 cakes per week. a...
February 23, 2012 by sarah

Math
A utility company has the following rate schedule for natural gas usage in a city's business district: Monthly service charge $8.80 per therm service charge: 1st 25 therms: $0.6686/therm over 25 therms: $0.85870/therm (a) what is the charge for using 25 therms in one month? (b...
October 30, 2015 by Jessica

Physics
Can anyone help with the following? I think i have the answer i would just like to verify that it is correct, An equipotential surface that surrounds a point charge q has a potential of 490 V and an area of 1.1 m2. Determine q
February 13, 2013 by Orla

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

Physics
Three point charges of 8 C, 3 C, and -5 C, are locate at the top, bottom left, and bottom right corners respectively of an equilateral triangle of side 1. Find the magnitude and direction of the net force on the 3 C charge.
March 16, 2014 by Anonymous

Physics: Manitude of Surface Charge on Dielectric
An empty capacitor has a capacitance of 1.86 μF and is connected to a 12-V battery. A dielectric material (κ = 4.5) is inserted between the plates of this capacitor. What is the magnitude of the surface charge on the dielectric that is adjacent to either plate of the...
May 10, 2013 by Phil-- HELP NEEDED ASAP

Physics
Four point charges are positioned on the rim of a circle. The charge on each of the four is +0.5 C, +1.5 C, -1.0 C, and -0.5 C. If the electrical potential at the center of the circle due to the +0.5 C charge alone is 4.5 104 V, what is the total electric potential at the...
January 29, 2010 by Anonymous

Maths
the monthly charge C of an electricity company is made up of follows:A constant charge a and A charge which varies directly as N the number of units used . when N=80 C =820 naira . When N =124 , C =1040 naira find the relationship between C and N ,find C when N = 180
January 9, 2016 by Anita

physics
An equipotential surface that surrounds a point charge q has a potential of 516 V and an area of 1.01 m2. Determine q
January 20, 2013 by adam h.

physics
What magnitude point charge creates a 13000 N/C electric field at a distance of 0.220 m?
February 3, 2013 by taryn

physics
An equipotential surface that surrounds a point charge q has a potential of 590 V and an area of 1.20 m2. Determine q.
February 18, 2013 by Anonymous

Science
(a) What magnitude point charge creates a 20000 N/C electric field at a distance of 0.210 m?
August 27, 2013 by Akos

Physics
Four identical metallic objects carry the following charges: +7.0 C, +9.0 C, -4.6 C, and -1.2 C. The objects are brought simultaneously into contact, so that each touches the others. Then they are separated A) What is the final charge on each object? B) How many protons ...
January 25, 2013 by Elizabeth

physics
A charge of +3.7 ✕ 10-5 C is located at a place where there is an electric field that points due east and has a magnitude of 16400 N/C. What are the magnitude and direction of the force acting on the charge?
April 26, 2015 by Anonymous

physics
An infinite sheet with a surface charge density of -2.1 micro-coulombs/m2 runs parallel to the x axis. Another infinite sheet a surface charge density of +2.1 micro-coulombs/m2 runs parallel to the y axis. A charge of -4.1 micro-coulombs moves at a 45 degree angle towards the ...
February 10, 2012 by Mandaleigh

physics
A thick metal slab carries a current I 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? Need some help...
December 18, 2013 by james

physics
if 3e charge is at the origin and magnesium nucleus is 3cm fom thr origin in the x-axis. what is the magnitude of the net electrostatic force a Boron nucleus would experience at a point half way between magnesium nucleus and 3e.
November 10, 2013 by james

Chemistry
Reviewing for exams and completely forgot how to do this and looking back at my notes doesn't help for this one... Can you please explain how to assign oxidation numbers for Pb(OH)4^2- I guess what's confusing me is the hydroxide... I haven't come across brackets until now. ...
June 19, 2013 by a Canadian

Phys.
A 6 mC charge experiences a force of 6 N directed north. What is the electric field (magnitude and direction) at the location of the charge? Would the direction still be north? And the magnitude 1000?
May 4, 2012 by Alex B.

math
Charge Q coulombs at time t seconds is given by the differential equation:   0 C Q dt dQ R where C is the capacitance in farads and R is the resistance in ohms. Solve the equation for Q given that Q=Q0 when t=0. A circuit possesses a resistance of 250kΩ ...
May 17, 2011 by Karl Haxell

Chemistry
Calculate the volume of 1.0 M copper(II) sulfate solution required to completely react with 1.0 g of Fe(s) according to this equation: 2 Fe(s) + 3 Cu^2+ (aq) --> 2 Fe^3+ (aq) + 3 Cu (s). the copper in the reactant has a charge of 2+ and the iron in the product has a charge ...
March 5, 2013 by Sabrina

physics
Two positive charges, each of magnitude q, are on the y-axis at points y = + a and y = -a. Where would a third positive charge of the same magnitude be located for the net force on the third charge to be zero? a) at the origin b) at y = 2a c) at y = -2a d) at y = -a I said A ...
October 10, 2011 by aichan

physics
A charge of .250 C moves vertically in a field of .500 T that is oriented some angle from the vertical. If the charges's speed is 2.0 x 10 ^2 m/s, what angle(s) will ensure that the force acting on the charge is 5.0 N?
February 27, 2011 by Adam

physics
A charge of .250 C moves vertically in a field of .500 T that is oriented some angle from the vertical. If the charges's speed is 2.0 x 10 ^2 m/s, what angle(s) will ensure that the force acting on the charge is 5.0 N?
February 27, 2011 by Adam

Physics
Charged particles such as ions can separate the charges inside of overall electrically neutral atoms, thus making an electric dipole. A dipole is characterized with a dipole moment p=αEexternal, where α is the polarizability of an atom, and Eexternal is the external ...
July 1, 2013 by Mary

Physics
A body is pivoted at a Point O. Three forces act on it in the directions shown on the figure. FA = 11 N at point A, 8.0 m from O. FB = 15 N at point B, 4.0 m from O. FC = 20 N at point C, 3.0 m from O. What is the net torque about point O? You have to also have the direction ...
March 18, 2007 by wolfpak

physics
A balloon rubbed against denim gains a charge of −5.0 C. What is the electric force between the balloon and the denim when the two are separated by a distance of 3.0 cm? (Assume that the charges are located at a point.) The value of the Coulomb constant is 8.98755 109...
April 22, 2015 by chris

physics
An object with a charge of +6.0 C is 0.30 m from a second object and experiences an attractive force of 1.80 N. What is the magnitude of the charge on the second object? (C = 1.0 10-6 C) (Answer: -3.0 C) The answer is provided but I don't know how to work it out.
April 15, 2013 by traevon

pre calculus
1.)A utility company has the following rate schedule for natural gas usage in a citys business district: Monthly service charge: $8.80 Per therm service charge 1st 25 therms : $0.6686/therm Over 25 therms: $0.85870/therm (a) What is the charge for using 25 therms in one month...
April 2, 2013 by alexis

physics
A charge of +24.3 C is located at (4.40 m, 6.02 m) , and a charge of -13.1 C is located at (-4.50 m, 6.75 m) . What charge must be located at (2.23 m, -3.01 m) if the electric potential is to be zero at the origin? ANyone have any advice? Find the distances to the center. ...
July 9, 2007 by jay

ALGEBRA
I was given a series of questions I got through all but the last point. I need help on letter L, not figuring out how to solve, just how to write it in an equation. Here is the main problem and sub problems and answers, Your company must use a transportation service to shuttle...
December 17, 2009 by anonymous

physics
Four identical metallic objects carry the following charges: + 1.6, + 6.2, − 4.8, and . The objects are brought simultaneously into contact, so that each touches the others. Then they are separated, (a) What is the final charge on each object? (b) How many electrons (or ...
January 28, 2010 by Sam

physics
four identical metallic objects carry the following charges: 1.6, 6.2, -4.8, and -9.4 μC. the objects are brought simultaneously into contact, so that each touches the others. then they are separated. what is the final charge on each object? how many electrons (or protons...
April 22, 2010 by kim

Physics
a frictionless roller coaster car of mass m = 719 kg tops the first hill with speed v0 = 15.2 m/s at height h = 48.9 m. How much work does the gravitational force do on the car from that point to (a) point A, (b) point B, and (c) point C? If the gravitational potential energy ...
March 7, 2012 by Brando

Physics
Sphere W (with an initial charge of zero) is touched to sphere A and then they are separated. Next, sphere W is touched to sphere B (with an initial charge of -26e) and then they are separated. Finally, sphere W is touched to sphere C (with an initial charge of 46e), and then ...
January 19, 2012 by Phil

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 ...
February 6, 2008 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 ...
February 6, 2008 by Trevor

physics
please check these for me: If atmospheric refraction did not occur, how would the apparent time of sunrise and sunset be changed? a. both would be later b. both would be earlier c. sunrise would be later, and sunset would be earlier d. sunrise would be earlier, and sunset ...
March 12, 2009 by physics

physics
Using gauss's law,calculate the electricfield at a distance r=20cm from a point charge q=4microcoulomb.
April 11, 2010 by Ayodele

Physics -- Repost
Homework Help Forum: Physics Posted by Sandra on Sunday, February 28, 2010 at 10:20am. Thank you for answering my previous questions! I have another one now in regards to the following question... An unknown potential difference exists between the inner and outer surfaces of ...
February 28, 2010 by Sandra

physics 2
A spherical cloud of charge of radius R contains a total charge +Q with a nonuniform volume charge density that varies according to the equation. p(r) =P0(1-r/R) for r is less than or equal to R and p = 0 for r>R. Determine the magnitude E of the elcetric field. Express ...
September 23, 2010 by derival

Physical Science
Plse help i need so much hlep on thes questions i am SO confused 10. What is stucturally diffrent between an atom and an ion? 13. If prontons and neutrons have the same mass wat is the approximate mass of apronton and nuetronin atomic mass units (amu)? 16. What is the charge ...
September 29, 2008 by Amy

Physics
Two identical charges are 36 mm apart. The electrostatic force between them is 1.3 N. What is the size of each charge?
June 3, 2008 by Marty

Science
What is the magnitude of the charge on two identical spheres that exert a force of 0.300 N when 75.0 apart?
January 25, 2010 by Michael

Physics
Four identical 12C charges are placed at the corners of a square of sides 44 cm, with one additional 12C charge placed at the center. Find the electric potential at the midpoint of one of the sides.
November 12, 2010 by Ivan

Physics
ANY ANSWERS WILL HELP! THANKS! 1. Isolated points of electric charge are called ____. 4b. ____ was the American physicist who first measured this fundamental unit of charge. 5. This type of electrification occurs when the charging rod touches an electroscope. 6. This type of ...
December 17, 2013 by Al

Physics
A balloon rubbed against denim gains a charge of -8.0 uC. What is the electric force between the balloon and the denim when the two are separted by a distance of 5.0 cm? (Assume that the charges are located at a point!)
May 13, 2012 by Kelsi

Physics
A balloon rubbed against denim gains a charge of -8.0 uC. What is the electric force between the balloon and the denim when the two are separted by a distance of 5.0 cm? (Assume that the charges are located at a point!)
May 13, 2012 by Kelsi

jokens
A sphere with a charge of 1.5 x 10-6 C experiences a force of 3.5 x 102 N when it is located at a certain point in an electric field. Determine the magnitude of the electric field intensity at this location. (remember E = Fon q' / q', and 1 C = 1.00 x 10-6 C
September 18, 2014 by Anonymous

Physics
suppose that the charge on the electron and proton did not have the same magnitude but instead differed by one part in 10^10. What would be the net charge on a 1.0 kg sample of helium gas?
February 22, 2012 by Luke

Physics (E&M)
A uniformly charged straight wire (radius a) has linear charge density lambda. The wire is coated with a dielectric material chi with external radius b. I need to find the electric field everywhere and the volume and surface bound charge distrobutions but I do not know where ...
December 14, 2006 by Anonymous

physics
Give 1 word term 1.changing momentum. 2.unimpeded motion of an object. falling under the influence of only gravity. 3.the phenomen that waves bend around the edges of an obstacle. 4.The force per unit charge at a point in an electric field. 5.the vector sum of the force acting...
March 6, 2012 by Anthony

Chemistry
In our text book, the formula for finding the formal charge of an element in a compound is c(sub f) = X - (Y + Z/2) where x = the number of valence electrons y= the number of unshared electrons owned by the atom z= the number of bonding electrons shared by the atom. would this...
December 6, 2006 by Alexa

physics
please check: A battery converts what type of energy into electrical energy? a. mechanical b. nuclear c. solar d. chemical D When a parallel-plate capacitor is connected to a battery:a____ is stored on one plate, and a ___ is stored on the other a. negative charge, positive ...
March 14, 2009 by physics

College physics
How much work is done to move 1.8C of charge from the negative terminal to the positive terminal of a 1.5V battery?
July 17, 2010 by emoni

physics
i can not find the correct answer for this one i got D but someone siad its wrogn electric field strength depends on a. charge adn distnace b. charge adn mass c. Coulomb constant and mass d. elementary charge adn radius
March 12, 2009 by physics

Physics
A thin rod L = 9.0 cm long is uniformly charged and has a total charge of 4.4 nC. Find the magnitude of the electric field at a point P located at a distance R = 13.5 cm from the center of the rod when: (a) The point P lies along the axis of the rod Electric field =___kN/C (b...
July 9, 2012 by Rain

science 12 (electricity)
What experiment can i use to test the amount of time constants needed to charge or discharge a given capacitor? Please...and is the time to charge and discharge the same? im a bit confused. Thanx in advance
August 8, 2011 by Luke

science
a sphere of mass 500.0g is released from point A 5m above the ground and slides down to point B 3.2m through point C 2m in frictionless wire track. (1)determine the particle's speed at points B and C. (2)determine the net work done by the force of graviy in moving the sphere ...
January 16, 2013 by trevor

physics
If the magnitude of the electric field in air exceeds roughly 3 106 N/C, the air breaks down and a spark forms. For a two-disk capacitor of radius 49 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 10, 2012 by james

earth
On planet Tehar, the free-fall acceleration is the same as that on Earth but there is also a strong downward electric field that is uniform close to the planet's surface. A 2.00 kg ball having a charge of 5.00 C is thrown upward at a speed of 29.2 m/s and it hits the ground ...
October 18, 2010 by Anonymous

URGENT Physics help
Positively charged Object A is brought close to neutral Object B but does not touch it. The two objects begin to attract each other. What is this process called? (Points : 1) grounding charge polarization conduction repulsion 4. How many coulombs could be in a lightning bolt...
April 21, 2014 by Hannah

Physics
How many electrons pass a given point in the circuit in 17 minutes? The fundamental charge is 1.60210^-19. And the current is 0.526315789
January 13, 2016 by Cynthia H.

Physics
How many electrons pass a given point in the circuit in 17 minutes? The fundamental charge is 1.60210^-19. And the current is 0.526315789
January 13, 2016 by Cynthia H.

physics
A particle with a charge of -4.0x10^-5 C, a mass of 2.0x10^-7 kg and a velocity of 6.0x10^4 m/s [W] is travelling perpendicularly through an external magnetic field such that the force of gravity is balanced by the magnetic force. Determine the direction and magnitude of the ...
July 13, 2014 by Liz

Physics help
A particle with a charge of -4.0x10^-5 C, a mass of 2.0x10^-7 kg and a velocity of 6.0x10^4 m/s [W] is travelling perpendicularly through an external magnetic field such that the force of gravity is balanced by the magnetic force. Determine the direction and magnitude of the ...
July 14, 2014 by Liz

physics
A particle with a charge of -4.0x10^-5 C, a mass of 2.0x10^-7 kg and a velocity of 6.0x10^4 m/s [W] is travelling perpendicularly through an external magnetic field such that the force of gravity is balanced by the magnetic force. Determine the direction and magnitude of the ...
July 14, 2014 by Liz

physics
A particle with a charge of -4.0x10^-5 C, a mass of 2.0x10^-7 kg and a velocity of 6.0x10^4 m/s [W] is travelling perpendicularly through an external magnetic field such that the force of gravity is balanced by the magnetic force. Determine the direction and magnitude of the ...
July 15, 2014 by Liz

Physics
Two 10 cm diameter charged rings face each other, 20 cm apart. The left ring is charged to -20 nC and the right ring is charged to +20 nC. What is the force on a 1.2 nC charge placed at the midpoint? I have already calculated the electric field between the two rings to be ...
September 3, 2010 by David D.

physics
How much work is done to move 1.0 micro coloumb of charge from the negative terminal to the positive terminal of a 1.8V battery?
September 29, 2009 by JOHNNY

Science
Use the following values for mass and charge: an electron has mass me = 9.1110-31 kg and charge -e, a proton has mass mp = 1.6710-27 kg and charge +e, an alpha particle has mass malpha = 6.6510-27 kg and charge +2e, where e = 1.6010-19 C. An electron is released from rest ...
February 6, 2013 by R

Science
Use the following values for mass and charge: an electron has mass me = 9.1110-31 kg and charge -e, a proton has mass mp = 1.6710-27 kg and charge +e, an alpha particle has mass malpha = 6.6510-27 kg and charge +2e, where e = 1.6010-19 C. An electron is released from rest ...
February 6, 2013 by R

physics
a green bead of mass 70 g slides along a straight wire. The length of the wire from point "A" to point "B" is 0.700 m, and point "A" is 0.400 m higher than point "B". A constant friction force of magnitude 0.020 0 N acts on the bead. If the bead is released from rest at point...
March 15, 2012 by Hector

physics
a green bead of mass 70 g slides along a straight wire. The length of the wire from point "A" to point "B" is 0.700 m, and point "A" is 0.400 m higher than point "B". A constant friction force of magnitude 0.020 0 N acts on the bead. If the bead is released from rest at point...
March 15, 2012 by Hector

chemistry
The dipole moment of HCl is 1.0 D, whuch represents a charge separation of about .17 of an electron charge. If the dipole moment of HBr is .8 D what fraction of a positive charge is found at H nucleus in HBr? Please explain
October 27, 2009 by Adam

physic
A charge of -2.73 μC is fixed in place. From a horizontal distance of 0.0465 m, a particle of mass 9.50 x 10-3 kg and charge -9.56 μC is fired with an initial speed of 97.2 m/s directly toward the fixed charge. What is the distance of closest approach?
October 11, 2012 by derek

Physics
The drawing shows four point charges. The value of q is 2.4 C, and the distance d is 0.86 m. Find the total potential at the location P. Assume that the potential of a point charge is zero at infinity. This is a question of electric potential difference created by point ...
September 3, 2007 by Mary

Physics
a small rock with mass 0.20 kg is released from rest at point A which is at the top edge of a large, hemispherical bowl with radius R = .5m. assume that the size of the rock is small compared to R, so that the rock can be treated as a particle, and assume that the rock slides ...
October 23, 2012 by Frankie

physics
True or false questions a)Rubbing a polythene rod with a duster gives the rod extra negative charge. b)Rubbing a polythene rod with a duster takes away positive charge from the duster. c)The duster will have the same charge as the polythene rod it has rubbed. d)The duster will...
February 8, 2009 by Victor

Physics II
A bead with a mass of 0.085 g and a charge of 20 nC is free to slide on a vertical rod. At the base of the rod is a fixed 20 nC charge. In equilibrium, at what height above the fixed charge does the bead rest?
February 22, 2011 by Alona

Physics
A stationary particle of charge q = 1.4 10-8 C is placed in a laser beam (an electromagnetic wave) whose intensity is 3.5 103 W/m2. Determine the magnitudes of the (a) electric and (b) magnetic forces exerted on the charge. If the charge is moving at a speed of 3.7 104 m/s ...
March 26, 2013 by Elizabeth

geometry
a point is placed on a two dimensional grid at some distance away from another point. The newly addes point is 95 degrees away from the original point. now describe the location
April 16, 2011 by Teresa

physics
if 3e charge is at the origin and magnesium nucleus is 3 cm from the origin in the x-direction. what is the magnitude of the net force a boron nucleus would experience half way between magnesium nucleus and 3 e charge
November 11, 2013 by james

physics
Two point charges are separated by 6.4 cm. The attractive force between them is 10 N. Suppose that the charges attracting each other have equal magnitude. Rearrange Coulomb's law and find the magnitude of each charge
April 17, 2012 by Christy

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 1.65 μC charge. (Let A = 1.65 μC, B = 6.60 μC, and C = −4.20 μC.)
September 5, 2015 by Audrey

Chemistry
Which of the following increase the melting point of an ionic compound? decreased charge on the ions increased size of the ions increased charge on the ions decreased size of the ions increased amount of the compound
April 28, 2010 by Megan

physics
On planet Tehar, the acceleration of gravity is the same as that on Earth but there is also a strong downward electric field with the field being uniform close to the planet's surface. A 2.16 kg ball having a charge of 4.80 uC is thrown upward at a speed of 21.0 m/s and it ...
September 8, 2010 by VJC

Physics
A particle has a charge of +1.5 C and moves from point A to point B, a distance of 0.18 m. The particle experiences a constant electric force, and its motion is along the line of action of the force. The difference between the particle's electric potential energy at A and B ...
January 12, 2011 by ali

Physics
Two charged particle are fixed on the x-axis 11 cm apart. The one on the left has a net charge of +25uc and the one on the right has a net charge of -11uc. What is the magnitude of the electric field 10 cm to the right of the negative charge? How do you solve this problem? ...
July 8, 2014 by Hank

Physics
Two charged particles are fixed on the x-axis 11 cm apart. The one on the left has a net charge of +25uc and the one on the right has a net charge of -15uc. What is the magnitude of the electric field 15 cm to the right of the negative charge? How do you solve this problem? ...
August 3, 2014 by Bill

Physics...PLZ HELP
How much work is done to move 1.0 micro coloumb of charge from the negative terminal to the positive terminal of a 1.8V battery?
September 29, 2009 by JOHNNY

Physics
The drawing shows an equilateral triangle, each side of which has a length of 2.20 cm. Point charges are fixed to each corner, as shown. The 4.00 C charge experiences a net force due to the charges qA and qB. This net force points vertically downward and has a magnitude of ...
March 24, 2014 by Joe Santhosh

Chemistry
Why does carbonate have a -2 charge and not -1? Why does phosphate have a -3 charge and not -2 or -1? Why does nitrate have a -1 charge and not -2 or -3? My answer: Based on the Lewis structure, these ions need a certain number of electrons in order to be stable...the octet ...
November 22, 2015 by Christina

Chemistry
Why does carbonate have a -2 charge and not -1? Why does phosphate have a -3 charge and not -2 or -1? Why does nitrate have a -1 charge and not -2 or -3? My answer: Based on the Lewis structure, these ions need a certain number of electrons in order to be stable...the octet ...
November 22, 2015 by Christina

physics
Find the electric field strength |E| at point P right above the edge of a metal ring. The ring has a linear charge density . Radius of the metal ring is R, the distance from the edge of the metal ring to Point P is D. thank you for helping.
September 27, 2012 by lam

  1. Pages:
  2. <<Prev
  3. 2
  4. 3
  5. 4
  6. 5
  7. 6
  8. 7
  9. 8
  10. 9
  11. 10
  12. 11
  13. 12
  14. 13
  15. 14
  16. 15
  17. 16
  18. Next>>