State the law of conservation of electriud+ sr /bqb)+ :f6ijrh7 u .vpi 8urkqmk71z(pc charge.

  Is it possible for two negative chtni pn(7msyyy9- scn5c1h0 0uarges to attract each other?

  Is it possible for a positive and a negative chp dx32w1kaz7c hzg):h . l.jbqarge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass iu dvp7 sz:5m4 ra*b;crod acqbvz su;p *i:5a7 m4drcuires a positive charge and the silk

  A proton carries a

  The model of the atom sha rqz, e61n2yq1wsv-mxw 2wy 9ows a

  A neutral atom always has 4l6zc6nela4 5zqb7(9 i jzryo

  An atom has more electrog;s mriac1,i ).ty ys;ns than protons. The atom is

  Materials in which the electrons are bound very tigs iep,d8sw nb 982j0akhtly to the nuclei are referred 2sap9enijwbs0 k ,8d8 to as

  Materials in which thl9f ukhvv( 3o6e electrons are bound very loosely to the nuclei and can move about freely within the material are referred to a9kov6 hu3lv(fs

  A negatively charged rod is brought near one end of an uncharged metal bar.:ryvq8 ,km fzg5o7t1p The end of the metal bar farthest from the fz ,g7po8 mvq51rkty: charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is r(o4 3)z +)rbzjjxew xneutral. They are placed near each othex 34br )o+j (jxez)zwrr on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge ,qq+b0;rvi6 wp r6bog an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charged 7xz en5g89ttpglass rod. The electrosc7t e8 5tzng9xpope

  An originally neutral electroscope is g5q7( g fcs9abj/dy es-rounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the ele-7s y/cdgjqa(bs59fe ctroscope

  A positive object touches a neutral electroscope, and the leaves sx;i/iv zwf a1f)e5-sh3b 81qpn vd/tjeparate. Then a negative object is brought near the electv3asdf)jxfi/; b1 t1-enp 5 qz/vihw8roscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is z9p2(pzh d3p bplaced on an insulated table. A neutral 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 n3z92zpp d(hpb ot 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 Coulomb constant (f-rzqmz (hjmx g4;k:$k$, which appears in Coulomb's law?

  Two charged objects are separated by a di;3v5rh;ecaegsv 8x k6+,cf efstance d. The first charge is larger in magnitude than the second vf;cghe,;v3kfa 6cr+ e s8xe5charge.

  Sphere A carries a net *)s1kbbvef ju8sm51q) o3muk charge and sphere B is neutral. They are placed near each other on an insulated tabkbssb 1m3om)v1 8u) uk*f5eq jle. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other witag+3)sg9n o pqe.-tzgh a certain force. If the charges on both objects are doubled with no change in separation, the force betwggaq)g o e-3z+9.ntspeen them

  Two charges are separated by a distance d and exert mutual attrlle1bcya wz ;90/ek;w active forces of F on each other. If the charges are separated by a distance of d/3, what are th;9e kw0;b/wlz1cey al e new mutual forces?

  Two charged objects a8/ th+4qopihb db;fp,wr(;ofttract each other with a force F. What happens to the force between them if one charge h brwidh+ fopot,;/ 8;qb(pf4 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 equal to

  An electron and a proton are separated by a dist9w*gd :4.7xiy qytqceu2yz ;t ance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placedd ttyyz7uq4 gqc: ie9w*x.;2y next to the first electron?

  An electron and a proton are sjig-(k7v6su rtv84z d eparated by a distance of 1.0 m. What happens to th6 r4t8vs zdk(ui v-7gje magnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by*)dk)iw 7 dtlzu*c+geb 4eqys (a)l f: 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 to th) ey4dd g7bwi(e ckut*s:q)fal)+*lz e proton?

  A point charge of +Q is placed at the center of a square. When a second point f d8r*j ws1*aocharge 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 8rfads*1 jo*wthree 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 placed aru9i giv0l * *dh95 z4fkprxe0t 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 t h5irprudxe zf 90k0 4lv**gi9he 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 :me* ( pqz,dhi2teo. xvector?

  At twice the distance from a point charge, the strenzu c.5j3yr4w lgth of the electric field

  Is it possible to have a zero electric field value between tkox*2 nk+b +gup 56jja negative and positive charge along the line joingnox 65 ktj+j2u+pb*k ing the two charges?

  Is it possible to have a zero electric field value between two p 996i;)szst2txk *to0rkb k zdositive charges along the line joining k6 so s r)xbit9tz0 kk9d*;t2zthe two charges?

  Electric field lines near psitive point cha a 564eiz;( va6pfzxq(1fcbc frges

  The electric field shownw.j 1l6(.76grgvp os er6agbp

  Can electric field lines intersect in free space8 yrkmy3n m55q?

  A solid block of metal in electrostatic equilibrium 2froxe1p ;ns mg x4(-6 crsqd*is placed in a uniform electric field. Give a statement concerning the electric field in thfc xms(xs6e qd 1 ;r2nrg4-*poe block's interior.

  If a solid metal sphere and a hollow metal sp,3fm9ixbwm:nej/ bt 2here of equal diameters are each given the same charge, the electric field (E) midway between the center and the surf9nimjmw,2 t x:bb/ e3face is

  A cubic block of aluminum rests on a wooden table in a region where a uny1x;xl pgq:)diform electric qgpld:x ;x y)1field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric m 4zhcki3 56jf 1vhrv9charge

  A positive point charge is enclosed in a hollow metallic sun q6wt0f/b; fgoc9b2h r -+wtphere that is grounded. A0f-btwh;2+6/wtnob ug 9 qcf rs compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties ofsmtmly 3 q//* n7p,ths conductors in static equilibrium.

State Gauss's law.

  The charge carried by one el91x cjx/eejrcoy m q:qaa-za 70 a;.z(ectron 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. How ys4hn4f3+1 er4tbo7 msrk1ir 7:po rkmany more protons than electrons dkphs 1or74+i y et4sb7:rnk 1fr r43mooes this piece of plastic have?

  What is the charge on 1 kg o2gmbbs 1hp 3a(f protons?

  An atomic nucleus has a charge 4lcy w4nz 7t1 md;rk3dof $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1e2 k 7s.3jrprl.5 cm, have charge values of 2.0 and -4.0 mC, rer2ps 3le7rjk.spectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second cha 4cbs)6ejan(z8f hzdek:t5/ lrge, and the force between them is 1.0 N. What is the magnitude of the second zaf) bj ctsd(/4e nk5zehl:68charge?

  Two 1.0-C charges have a force betw sqf-i9jo4 l*xeen them of 1.0 N. How far apart are they?

  The force between a g)p dv (m k-4fkyoqiy2r+ 6yrd96ad9 l$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiallni t flak,c e*g)92rl)y 2.0 cm apart, experience a 1.0-N force. If they are moved to a new) ilc *f2r g9nka,)tel separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the fuzb/ nvh k ;.t.r+a,cx-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 acts on the charge at thc+;rfvah k. z b.n/tu,e origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed at hgh-hrsyr40o y*86d(3 nfmlusc*2 cp 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 magnitude and direction of the electrostatic flnyu-rp2h4o c s3s *grcfy0(68hm * dhorce which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC atadhj ,l+xfpuk + k:;a*nz 5,vz x = 1.00 m; Q2 = 3.00 mC at x = ;k,zu * z v5,ha+xjanf kpd:l+0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the cenc4 yfy ss2v7 zfqtx+::3bmo*b ter of 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 ty cs*yxb f4 zo2t: +:mf7vs3bqhe 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); Q2 = -1.0 nC is at (0, 0.10 m); Q3c lbn;( 0p+fhjpw39u o = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 n9 c b;howlpp3u+ (0jfnC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (n)xrp7px)bj1 2)lr a e0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of th7p)b) 1nr ax x2relp)je net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateralmh.0 x. mnn9v.9u 0acmh0gvel8soa a4 triangle which measures 30 n u.no9vac90s.m 8400hg alm . emavhxcm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separaoa8tj +p h zoz.l 2ry/z;(a4cjted by 3.0 m. At what point, on a line between the two chargezt2aa.r zoy;( +j/4zoh8 pcljs, 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. za4.l/3 ijncdWhere on the x-axis . a/3izc4jn dlcan a third 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 = 2a. bqc yk+t; 12wrw5kbt1Where can a third positive charge +q be placed so that t; bw1k+wycq 152rtkbthe force on it is zero?

  A copper penny has a mass of 3.0 g. A tb,ngrg 03qtrq+)4e deotal 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 af fbv-7cur7 lc9g92z h fixed proton some distance above it. How far above the ele2 b9 g-77cf fvu9hrclzctron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonco5 se zav 5.g2xjyu ruf/3db8h5*o,ymk nducting threads which are 30 cm long. Both are given identical k5u.m/hr 35 bf*y, uaej2gy8svdxz5 o charges, and the electrostatic repulsion forces them apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude of the elect f-m6ep*gmxll- a y6/wric field at a distance of 1.0 m from theem 6mya l/-px -lgw*6f nucleus?

  What are the magnitude and direction of the electric field at a distan7 ch:t67e41o fwc odttce of 1.50 m from a 50.0-nC ch6et14o :wto cfd7t7charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thzya.*du apwdn,bbd+ )6 8gtn;e electric field,za)a;ub wg+6ny ptn 8b.d*d d at the location of the test charge?

  A 5.0-C charge is 10 m 8m w r.e8r e6nbxo1yk*from a small test charge. What is the direction of the electric fie 18nx.e*6mr oekyr8bw ld?

  A 5.0-C charge is 10 m from a small trvio ;hast5 :) ok87mfest charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at theas to 7)fk8; rmv:h5io location of the test charge?

  Two point charges each have a value of 3.0 C and are se tv. ()z*ja oyz13mgteparated by a distance of 4.0 m. What* ogt(vzte1m zj a3)y. is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm bxe i0:rvtxu t-zn+/. mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What irb+ix: zntx.t 0/u-ves the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter 58c dorb t4.yarontej4)+ t/x stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the e4db8jrr)y/4 5cnto .aextot+ lectric field zero?

  Two point charges of 7eqm2r*q(pnso z+ xxup,up80t0ff l)+3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the )0 m* l(+xufpqo8r0ezn upqx2f7pt, spoint midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 ;ocmgdhkit08-+ lbd.i , xs 7tm. The last -ttxmscb.o+l;8gi,0i hd7kd corner 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 placed at the c7z,:3s8, qc/s mkz jnn7izrq lorners 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 magni ksrs,7mz zl7/,n3c nq:i8 jzqtude of the electric field at the square's center?

  A force of 10 N acts oiwe9,dud:er z r6x0h.4p1jz z n a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this elece.0dj 1r uzz,xde:4i 9p h6rzwtric field?

  A particle with a charge of 4.0 mC has a mm.)mn ;9iz-pa y6x-+yrrmuocass of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of u. ;r7ocjvq1t mass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be qo7;u.c1 tv jrsuspended?

  A foam ball of mass 0.150 gw muc2enu50 5e carries a charge of -2.00 nC. The ball is placed inside a uniform electricn2 0 e5eu5uwmc field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnqc qf n;iu 3y1)hqq81ekq*5ghxx)cp 6itude of the electric field 5.nq)kxy 1h68g x) eqicu3p f qc1;q*h5q0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wue +ehq 6/f6sphat is the electric field 6.0 cm from t f66+upeseq /hhe center of the sphere?