State the law of conservation of electric charge73 pz efqm1g :vj+5zju.

  Is it possible for two negative charges to attract each othert6-bx ,3wixmn/m (vur?

  Is it possible for a positive and a negative charge to a;tncl h)*vaj ;ttract each other?

  A glass rod is rubbed with a piece of silk. During the process the gla v d*m1d(dta*od0g6pj0wsq b2 ss rod acquires a poswvs(2d6 0mdpadgoj1b t0 * qd*itive charge and the silk

  A proton carries a

  The model of the atom showh v ivw. 2(mk3o)vrj7es a

  A neutral atom always dmgv8-7humn j b. d;6whas

  An atom has more electrons than vc/fx5feewj. 8ezn :uu x3qbzy52.r rv8 0z4 dprotons. The atom is

  Materials in which the electrons are bound very tightly to thqi :(li2;nl6xf g;sx c4em*l le nuclei are referred sl;gcq2fenl 4;xix li*6m l(:to as

  Materials in which the electrons are bound very loosely tott/(n3-xua lo--+,c u/wkzq rqvlzg 3 the nuclei and can move about freely within the ma3 +/o( xtua qgw/-q-c,vlnlu3-trz zkterial are referred to as

  A negatively charged rod is brosoc0f3,e2da*m ti s 0pught near one end of an uncharged metal bar. The end ia0s3 c,*0f pdes tom2of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They ar grx ;yvs),1z )1dciufe placed near each other on an insulated table. Sphere B is briefly touched with a wire that)1 vd)z1 fxry,scg; iu is grounded. Which statement is correct?

  How can a negatively cht70m 5 f9pk 7k mjcww7;l.xbroarged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively chargz eo;lm*j/53nmzb ao (ug4cb.ed glass roa b. mj *b(mlg/z5;oez4 n3ucod. The electroscope

  An originally neutral electroscope is grounded briefly while a positiv ss;1;fg hazrh9l+cr9o gw+m+ely charged glass rod is held oagr91g;;rwl +h mcz 9++ss fhnear it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separzrn7 9.wqc smnkkifd-: 9x- 0vate. Then a :zrmki-7q9 d.n xkwvnf 0c-s9negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged objrhqt*fb 10eozp0xyzl,16+ p g ect is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutr,1l erzfp 0+ y61ogzqb* xtp0hal metallic ball rolls along the path followed by the first ball, strikes the first ball, and stops. The first ball rolls forward, but does not touch the negative object. At no time does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Cj67-uuicb;3v1u sdo boulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are m/vhxw j8 z tw3*m/e2d(cjgz 2separated by a distance d. The first charge is larger in magnitj h(*veztxg /mzd22mw wj/ 38cude than the second charge.

  Sphere A carries a net charge and sphere B w;9jvphjtoj+8 0f 6(8kybl ;lwhm4uq is neutral. They are placed near each other on an ins0f8; kul9jo 6v qjt4lwyhmpb+hjw ( 8;ulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain forc is0cp7k . su8u8jxrw-e. If the charges on both objects are doubled with no chwpjuc. 8 -8uix s0k7srange in separation, the force between them

  Two charges are separated by a dit c 80-shv:z4us fzyf:stance d and exert mutual attractive forces of F on each other. If the charges are separated by a disttf 0z: s8hzsy:uf4 v-cance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force wyxme3/6 o )w f(.mpzzF. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its original value? The force is now em wpef 3(.)zo6mz yx/wqual to

  An electron and a proton are separated for o pc+moo*rf695hziy, 3 :dby a distance of 1.0 m. What happens to thp 6z5d+oomi:c hrfy9roo*,3 fe magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a d kp+f y.5ndq l3c.olh*istance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to tflk5op+q.. ynch l3d* he proton?

  An electron and a proton are separated c9 (rl- 07xl nj;rbhmdby a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer t07 jc9(rn-bmllxd; hro the proton?

  A point charge of +Q is placed at the centehmbf8nb* ,d k-r of a square. When a second point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force of 2.0 N acts on the posim8 ,n-*bdhfk btive charge at the square's center. Now, identical charges of -Q are placed at the other three corners of the square. What is the magnitude of the net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is place yuuwxbc q:m7i)5*gbw m+35jz d at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acu7ywmx )qz:5 c3 +iw*bb gj5muts on it. What is the magnitude of the force that acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vep(dg tre/:p6:q 5dqv+zlbnzye:8 ( t ector?

  At twice the distance b)u+bygn.u1ba3at 3lfam,9y from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value betkli l8pqp5wm zd +)s(.ween a negative and positive chz dpq)8mlp+5s(k . ilwarge along the line joining the two charges?

  Is it possible to haveau/nt, k 3 1t8b9w9jznr: suxo a zero electric field value between two positive charges along th9os/j 89 zu1nrak unbtw3:t,xe line joining the two charges?

  Electric field lines near l jbw48)uz fkh:f),lgq+zbzku .g 55upsitive point charges

  The electric field sm t.k.al e/dr vgm0n 2f7am+9ahown

  Can electric field lines intersect in free spagk g/k20w1 .xx*g5culu:dim; tc bap,8kf*na ce?

  A solid block of metal ivhg/lq24 a8 y4h lkrp3t s/bl1n electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric fiel4a gr 2/l3q1bls vhhlypk 48t/d in the block's interior.

  If a solid metal sphere and a hollow metz+9fmvna2 i7 3*kr t2qmnve5xal sphere of equal diameters are each given the same charge, the electric fifxkv m3 a29v*i75 mn2 qrnz+eteld (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in.lahjlia z08(z5k xni11 ims+ a region where a uniform electric field is directed straight upward. What can be slm l s( h+zi .k18jaz0n1xai5iaid concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric hf7s: kue2o (meg6bc4 charge

  A positive point charge is eng) uujf og-w/km551e-yj2ej nclosed in a hollow metallic sphere that is grounded. As compared to the case wit1jw gmnyj-5e)kufguo- 2/ j5ehout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of condues;ef:rmmr7; oga6 8j ctors in static equilibrium.

State Gauss's law.

  The charge carried by one kg+407 y-mwinp ip8jt electron is $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charaq -y* +ocvfdasx0qg5c ;jy-.ge of +2.00 mC. How many more protons than electrons c+dvf a5 ;-cyg*o0 xyjaq-sq.does this piece of plastic have?

  What is the charge on 1 kg o6ogtk/)znf ,y f protons?

  An atomic nucleus has a charge,pip/ou(otrj((w nq x xkx1/ k+ahr5/ of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, s;m . tmyyh/c:deparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the .;c:/mytd hmy electric force between them?

  A 1.0-C charge is 15 m fk 3jqqg*dz )1p4 kfh1irom a second charge, and the force between them is 1.0 N. What is the kq11gh34q*dpz ki j)fmagnitude of the second charge?

  Two 1.0-C charges have a force betwe6xdmn2jh9 a:8u lt qh 88*xqsven them of 1.0 N. How far apart are they?

  The force between a d 8thvpi,9h:v$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiqm+4o4ic g7y h tfzx-(ally 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the eleih+4 x4 -7of(cmzygqt ctric force between them?

  Three identical point cf g,1 +zn)en ha6.rwbzharges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mark. 61rhgb+ )af.zwnz n,eWhat are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is plal 7(rf)qv; rq,vit 5wh8km:du ced at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm mark. vh:(mfqqulw k)v87ri;,t r 5dWhat are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are lojm5c obe/ndqr;5t hy zat(+lo/:f;w9cated at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00;qwdctoye 5(z ;r/ f +jt95nloma/ :bh-mC charge?

  A point charge of +Q is placed at the center r17/s 0gw vepqof a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on the positive charge at the center. What is the magnitude of the force that acts on the center charge if a third charge of -Q is placsvp0r e17q/gw ed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0vw62c*tnhwxx:bboe x( 1g6o ) nC is atxvo( )tx w6g h1eb2n xow*b:6c (0, 0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0x j+mugp 2dmg5,q *m,m); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction d*qg2g ,ummp +m,jxm5of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at tu*ymzev0l vt.7 .ekd .he vertices of an equilateral triangle which measures 30 cm on a side. What is *u ye vv.7d.0 etz.lmkthe magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are se,rfhy4 nkn((hb 6 usf2parated by 3.0 m. At what point, on a line between the two charhfsku4 bny6h(r2 ,f(nges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m.oqouh2bjmgiv9eq; 7q9, s9,4h wv k+v Where on the x-axis can a third chargmh ,,oe79 okiqvvs g h;2+qjuq499wvbe be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed a9)m,f-71t3u zdqikz7v d nk hdtdiidv)-y.h-t x = 2a. Where can a third positive charge +q be placed so that the force ,vi)dvqkz-hhu7 fdd7) z-k913 y iti.tmd nd-on it is zero?

  A copper penny has a)udmp* gkr/f 8 mass of 3.0 g. A total of $4.0 \times 10^{12} \; electrons$ are transferred from one neutral penny to another. If the electrostatic force of attraction between the pennies is equal to the weight of a penny, what is the separation between them?

  An electron is held up against the force of gravity by the attraction of a fixedn5 97jynd+ d5y(nk8xrbwo 1ud proton some distance above it. u8w5d y5njk1 7ydr(nbn o9xd+ How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting z7qtmo29 jnc4threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the jt7n2moq94c z angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of 9d5u;w tm ;48zvb9/f/an luamoh l-m+wloe.u+40e. What is the magnitude of the electric field at a distance of 1.o-uatb9/vno+ ;/8luu hm5em;lm4z dwal .w9f0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distanc iwp vz a58ptn/sw30-xe of 1.50 m frz vpa/s08x wntp3 -i5wom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the malx:;q5yo7 0fs,fck up gnitude of the electric field at the locatqko5fy 7 fuc; ,l:s0pxion of the test charge?

  A 5.0-C charge is 10 m from a small test charg , ;b,g;qnaltde. What is the direction of the elen,l;tg, a ;qdbctric field?

  A 5.0-C charge is 10 m from a small test charge. What is theyt/y 02j se6g w*grzzkra1:-o magnitude of the f/j*gaz- e1 twkyy rrz:sog26 0orce experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated rrxhg t ape,0jt) ;v*5by a distance of 4.0 m. What is the electric ft,r;)e vgp*txr ah5 0jield at a point midway between the two charges?

  A 5.0-mC charge is plac-iqnse1p+ 2z 96jt wched at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 sqw6 ethpc+1zji9-n2 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of sa j:jx 61c3rda meter stick and a -4.0 mC charge is placed at the 50 cm mark. At whj13 cx6drjas:at point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0q gdphb4o6d;pk4.4 es ws5yd* and x = 0.20 m. What is the magnitude of the electric field at the point midway betwegh sp46.soyd;4 qb p4wkd de*5en them?

  Three 3.0 mC charges are at the three corners of a square of sideerun ( r:p3w2 6ym6vpq 0.50 m. The last corneq6upp2wn 6e yr3m( v:rr is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are planl m lx52/zm8qced at the corners of the square as follm z2n8xllq m/5ows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0); -3.0 mC at (0, 1). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placedd cf2)/yr xcu.nk2n+/sgs c:e in a uniform electric field. What is the magnitude of this en:x2kre+d/ . nys fc 2/gccs)ulectric field?

  A particle with a charge tcpi) )j/ velgm7n.u3jqv /zary8 :,zof 4.0 mC has a mass of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is placed in an el5 u5 krpaoro v(/ x11vg;u.pxpectric field of 6000 N/C pointing dk .;1pv5p xuauv1gp/ro 5o (xrownward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a cham(ywq 7zqq x.u8z9 ng-rge of -2.00 nC. The ball is placed inside a uniform electru 9w( .zq8 qn-7zygqmxic field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius i)jm:a; kjh 5x10 cm carries a charge of +2.0 mC. What is the magnitude of the e)m;jh5xij:k a lectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electz zh6sba9ja8t emt,, .ric field 6.0 cm from the ceja,z tb 8,9es6athm.znter of the sphere?