State the law of conservation of electvu*+qryiscw w- pl-i 8sqd .;9ric charge.

  Is it possible for two negative cha; c;8tekrtndj3i .6w .tid* forges to attract each other?

  Is it possible for a pocqjj52a 1 i9pwsitive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Durinz)/o9ze. mz)e-qg nof,y :xhgz*uqv0g the process the glass rod acquires a positive charge and the 0 x zmegv z, zfqngoo u/).:9*)h-yqezsilk

  A proton carries a

  The model of the atom shows5v( x 8j r ,blfqg:og5pe)ur5p6v.kar a

  A neutral atom alwayn7/h/m rhpv9c(yvp ,cs has

  An atom has more ele(* cl/3 lqkmkyu8-lpuctrons than protons. The atom is

  Materials in which the electrons ar:j0r mz9);8g y0oyuovge a9ihe bound very tightly to the nuclei are referred to z99 y uhjmey:08 a igo)0;rgovas

  Materials in which the electrons are bound very loosely to the nucle;6fnyl 7+cx pui and can move about freely within the m n67yu; xpflc+aterial are referred to as

  A negatively charged rod is brought near one end of an uncharged mey7*g kqn18qcs tal bar. The end of the metal bar farthest from the charged rod will be7kqs*c8qng 1y charged

  Sphere A carries a net positive charge, and spherej 5a1 pdyf*)kl B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which sta*k )a 5f1jpyldtement is correct?

  How can a negatively charged rod charge an electroscope positi pd viwkk022kcw455 oxta6j5 nvely?

  An originally neutral elecy.5 d k-yhg*jxfsj6tv3 fq)w8 troscope is briefly touched with a positively charged glass rof.53 q8)vg xj- ywy*jtf6dkhs d. The electroscope

  An originally neutral electroscope is grounded briefly while a positively char/ n1 iikm;f(ndpsz .yh*)hq3nged imn) 1spz dq(i/fhnk3*nyh; . glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touche4p98wo; pf aalvxt e()8 dyb(is a neutral electroscope, and the leaves separate. Then a negative object is brought near the el84exw paliv8 9tp(byoa) f;d (ectroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A 7ngv(ru 8kaf1neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral 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 negaak7( nf1rvgu8 tive 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 Coulom 6 - warrp.ctwa6p-en5b constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a 2ab1do4/yb4(x vh8 fd8 ivlxadistance d. The first charge is larger in magnitude than the second chxa 8(4o41y8a2xv/hbbid fd lvarge.

  Sphere A carries a net charge and sphe -ahsployqr/q6/xz/2+gqfxsis i13 7re B is neutral. They are placed near each other on an insulated table. Which ss/qx+1fr3s7/q z2as-lg o6i iqx hy/ ptatement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain forcrn m;k/xnv 6. nc4,2dj-l wzage. If the charges on both objects are doubled wn6n2/w -v,rcmkj.x 4 n d;lazgith no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive fodn e90p ;6i3rdxj qj26mfp4zv rces of F on each 9mq 4z6pvidnr; x0dj2fpj36 e other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the forc2 pkku(h 7,s34pojman e between them if one charge is doubled, the other charge is tripled, anoka4uh2kms (j n p,7p3d the separation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separateddzzk4+ x;v ; i-k:smgv by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second +4- vdgvkzk;zx:si;m electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. Whatc c6t -qw3sey i0sh w)cx:j:x5 happens to the magnitude of the force on the first electron if a second electron is placed next 3 cic:cj-et)s wxx0 y:w5hsq6to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens 4a kwgrjf.m o6xb ns*hr:(.z 1to the size o 4j(rk 1mor6xz.gbfnwh .*a: sf the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When o+ i-h 7obxtl ey7fytl5 r*)u(a second point charge- 7+yxroiotl * 5eb)hf7ul(yt 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 positive 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 vb ,aenl;sgy8d:9bs2a ; r 3uv fnqscmu;,.i4 is placed 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 acts on it. What is the magnitude of the force that acts on the center cha2;fn8;ulq bi3c,b g ; rdas . emuv:4as,syvn9rge due to a third charge of +Q placed at one of the other vertices?

  Which of the following isvnodcuug4q0**7o zvhc ) z;(c,xq7ai not a vector?

  At twice the distance from a point charge un,22kb2oa3vu a;avp pkx; (n, the strength of the electric field

  Is it possible to have a zero electric field val vgib8yx:ve7(ddaeu tj0n: ) 3ue between a negative and positive charge along the line joining the two en tdig:xveujvd : 30yb)78(a charges?

  Is it possible to have a zero electric field value between two poswh5*d(21e )3rlosq 8s.(p t+jsm qwx sqjqj/fitive charges along the line joinidjq5h 8qes+w/1 r2s ol(. *wqtm (xs)pqsjj3fng the two charges?

  Electric field lines near psi4i 8ym.jwuj( ktive point charges

  The electric field sweup q+fi31m1o5nnxz,hj 8r c22 fsu;hown

  Can electric field lines inters-7wm- mj+z jg( tzvl.hect in free space?

  A solid block of metal in electrost-:boz/ 7 vxv* mwix;ptatic equilibrium is placed in a uniform electrzp mw/v*vt;x ixb :-7oic field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and .bj2y 5 cdqzo,a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between theb2y ,q.jd5ocz center and the surface is

  A cubic block of aluminum rests on a wooden table in a region wherpy6s3o 0 vjd(re a uniform electric field is directed straight upy( 6rsp0d3vojward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an e z3purunmyxp +7ug)/ bgd)0y)lectric charge

  A positive point charge is enclosed in a yve*. wgifxbfa5e+) 7hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directx5v + 7fey.ab fei*gw)ly above the hollow sphere has

State three properties of conductors in s a(u( rxuhc3;nql *f0www2/1my,w orktatic equilibrium.

State Gauss's law.

  The charge carried byd hmf8 ;.o)xoe one 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 charge of +2.00 mC.;5hwh ( k7 (r/aw mv8vsveqgw:fpp;s: susa4+ How many more protons than electrons does this piece s( v5 /w7+kefs;;ruph pa:wg4q8v(shaswm v :of plastic have?

  What is the charge on 1 kg8p7b+wr:h:r biq9b eh of protons?

  An atomic nucleus has a f0um2a*qc5khhuk i 1: charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sepax 2ozez ap6m7,lq;xj7 rated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the j6eq 2xm7 p7,oazlxz;electric force between them?

  A 1.0-C charge is 15 m from a secqa, .e, xx 0ez20j9svc)lhhu eond charge, and the force between them is 1.0 N. What is the magnitude of the second charg0e)l29z ,easquh xj c0,xhev .e?

  Two 1.0-C charges have a force between them of 1.07ypvlpt(seg,*m2 ) gd N. How far apart are they?

  The force between a r( bfhe6zz 9g4$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiallyo/ )):)(yb hbib hk ;du1/ tckwwqzf9p 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 electric)//hb uwqw:obz thcb ;1fp9y) ik)k(d force between them?

  Three identical point charges of 2.0 mC are p6d mwwttk7h /;laced 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. What are the magnitude and direction of the electrostatic force which actw mdkw ;tt6h/7s on the charge at the origin?

  Three point charges are placed on the x-btl uub1) (dvfw ;4)upaxis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm mark. What are the magnitbwp4( )blfuu)tvdu 1;ude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the followi-tm 4ogz j 3:a pk+jfn-pzz r.kb4xc68ec61ying 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. g -za1bz icpm nfo+ jyckpj3t4684xzek:. 6r- What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is pla5eo1h apqp)a 1ced at the center of a square, and a second point charge a p)11qopha5 eof -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 placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0)i q.f3rd2of9f; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5 9 d2frfif3.oq.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at mi 56 6ht juxc6zcnj89(0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC charge?jtcnj86hc9u 656 im xz

  Three identical charges of 3.0 mC are placed at the vertices ofe vw 9h9bcpsx,1y,w( pfc 8qx. an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostaw f 9q,1, ec(pyw s.p8xhbcv9xtic force which acts on any one of the charges?

  Consider point charges of +pt)c,czhk,,xiy/ * i cj-nuu l8b;fa5Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be po,ai h tz ckn/,,5iu8cyx*jl;)-bc upfssible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at by 66e1xfn+byatsq 8e36lv-sthe origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a thire+tn vf8a 3q6e61-ysbl6 ybsxd charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x s:5knv g. ;foc= 2a. Where can a third positive charge +q b :g cof.nk;sv5e placed so that the force on it is zero?

  A copper penny has a mass of 9cgkiwe6,/e-4mo (ptb mn7 rwbgf- +w3.0 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 m(yhs k+6oe*6m9td ccfixed prot dt9chyk mc66*(es+moon some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncx hwd,q9j8py rjx8-d .t)3zykzb c,.donducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apacz- yzjh8)yk.xp.b,93qt8j dw x,r dd rt until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge8: g3ghqh5elz of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nuclezhhgqg: 8le53 us?

  What are the magnitude and direction of the electric field at a distance of o r cma (z4y+z.5i0cq b-bebu5fg+3ts1.50 .aobg+bzfscc q3r55z4yum+ib( te-0m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Wh0s ayecfkd z.js5de;o1 -f )*kat is the magnitude of the electric field at tdsf* zc j a0eys;.-5oekd) fk1he location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. yydh 0t+bfe81; erff- What is the direction of the ey f;bt+e-redf 18y 0hflectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magtieo1( 4jap* hnitude of the force experience *et (hiopja41d by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 afv.w-gd*r( p.pgvh 5C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two charges?ar -*.hd5p.w vvg(gpf

  A 5.0-mC charge is placed at the 0 cm m;7 8yeatzp7n wark of a meter stick and a -4.0 mC charge is placed at 8p;7n yzta7ewthe 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placedpe0gcctu - wu5.k g/df2cw/;t at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joinitcde.wk;fug//w5p ut 02- c cgng the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 hf-mq7f 4je*b m. What is the magnitude of the electric field at the point midwabjm f*4-eqhf7y between them?

  Three 3.0 mC charges are at the thre. oxj(5dr7wn*odrz h2l o 3yp5e corners of a square of side 0.50 m. The last corner xr5 zwypdon2l3j do7o .*h5r(is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which efic5f :+l 9msis 1.0 m on a side. Charges are placed at the corners of the square as follows: +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 lff+5 e:csm9i 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 placed in a un s +mi27y2jrnjiform electric field. What is the magnitude of this electric fieldnj+72y2 msji r?

  A particle with a charge of 4.0 7voxl1 /s)uo:(a y 9/q oxv5gwjgveo :ua;rw1mC 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 elecmr 0erha4(y 1otric field of 6000 N/C pointing downward. Wh01o(4r ae yrhmat charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.0+ nd,k+xxi ttvx8x- q*0 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magni8+qi x-+xnvdxt x kt*,tude and direction of the electric field?

  A metal sphere of radius 10 cm carries a chargu8/2i bohqlo cz3 w4y(e of +2.0 mC. What is the magnitude of the electriowz2 qo4iy8(/blch3u c field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm ck, 9s5m+ qsu,j l1 h)ywktae.yarries a charge of 3.0 mC. What is the electricq y, aw.u,les )k5jhtsm1+k9y field 6.0 cm from the center of the sphere?