State the law of conservation of electric c1- t7 my7mhd d;bgl5bcharge.

  Is it possible for two negativebe qn(v fl*m q1g9d4r7 charges to attract each other?

  Is it possible for a positive and uoq94w6v6pdqd/4yxd;mhn 1bsi p ;p -a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During thr. xz, mgmji104m+ ypt*s lhlm9.bo s2e process the glass rod acquires hmxmz .4 1myoi*j t,lb 9r mp2gs0.ls+a positive charge and the silk

  A proton carries a

  The model of the ato8yi987vdx8clmb 9zwam shows a

  A neutral atom alwaysph6n dh2l3g x+ has

  An atom has more electrons than proi)jrad*)g : votons. The atom is

  Materials in which the electrons are bound very tightly to the n jx l 4un5wu(f,qsd*9zuclei are referred to aw945s,u (ldxz* nufq js

  Materials in which the electrons are ;7qw9)j vl( fbk gs/-aev*llfbound very loosely to the nuclei and can move about freely within the material are re vallj*k 9 b)lfe(ws-q7gvf/; ferred to as

  A negatively charged rlej210zw ldeu 93uw,9h6 xm7erb hu 9yod is brought near one end of an uncharged metal bar. The end of the metal bar farthew9lumh1e eh6lw9 r bx3 uu927yj,de 0zst from the charged rod will be charged

  Sphere A carries a netr4 zh.ql d nsp55/ps/b positive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is 5.lpspdb r/z/s qnh4 5briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posithg- 6ywu;hndp) d7 5pgively?

  An originally neutral electroscope 8ade prapccx1g 2(0 xe+,jp .mnxuz9)is briefly touched with a positively charged glass rod. The el)0paa1zp., xce 29 egjxp u+x( 8rncmdectroscope

  An originally neutral electroscope is grounded briefly while a positively ch.5j y ohu c58k ;3*weoihcu.xkarged glass rod is held near it. After the glass rod is o*ycj hhik e5ow.xku 5; 38cu.removed, the electroscope

  A positive object touches a neutral electroscope, anhak zc9*l d)3td the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. dchk)tl*za39What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neut:*si8aw;u z4rid3;o gq6uv i vtd,j:iral 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 negative object. At no time does either ball touch the negative object. What is th,6ij ; d :dt4*i:ugo wiuq;8r3visavze final charge on each ball?

  Charge is

  What are the units of the Coulomb constantxw;iv.tx8 : n.oq27ic;t n*0 b8tdpcrc4be zl $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger iq fnhzsk4 mv x ot70(n;l4*-ppn magnitude than the second charg sozntlqnkv 0; *f4(7 h-4ppxme.

  Sphere A carries a net c(.j6me6 of qicgqra4.harge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostaq 6r i4.o .g6c(ajeqmftic force between them?

  Two charged objects attract each other with a certain forccnk .c2id)bl,e. If the charges on both objects are doubled with no changcnb2c) ld.ik ,e in separation, the force between them

  Two charges are separated by a distance d and exert 1z uhg2a*fp,s 1ih-lcmutual attractive forces of F on each other. If the charges are separated by a distance of d/31af- l1h2ghziup,c *s , what are the new mutual forces?

  Two charged objects a g1ca-o0dr;sjttract each other with a force F. What happens to the force betweejdsr 0og-;1c an 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 equal to

  An electron and a proton are separated by a distance of 1.1dabw5 z;vplpo8, ay00 m. What happens to the magnitud58;l1,zydpwava 0ob pe 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 distance of 1.0 m. What hakbh s8e w.x y10vx,o:pppens to the magnitude of the x01xke, yvwh8op :bs.force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distd y4c:k zb .tqcialu47fxab9;+eq(t- ance of 1.0 m. What happens to the size of thayfzkqlx tq94d-t7c b .:;c e4b+iu(ae 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 a secon);bov9w.o dnq0cn6 u vz,qi)nd 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 positive charge at the square's center. Now, identical charges of -Q 6. o;uvi)wn,0qbzn)nd9oq v care 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 placed at the centroid of an equ nl/(92xcckjw ilateral 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 charge due to a third charge of +Q placcjw k9x2/ l(nced at one of the other vertices?

  Which of the following is not :,vn2j x gk0d t6mc0yca vector?

  At twice the distance from a point charge, the sta42,qh mfl9s ,p zs,gdrength of the electric field

  Is it possible to have a zero elen4vn,ymsw+xv*u 4 s9c *ca m0octric field value between a negative and positive charge along the ,9ycsxacwv u 0*m*n +os4v mn4line joining the two charges?

  Is it possible to have a zero electric field v rwwe q zfhb ;25ol/-erc7xara0h x.+7alue between two positive charges along the line joining the twoxz q/c -rb0ao5f.2rx whlw;eera7+ h7 charges?

  Electric field lines near ps3s0t.*gsql iu itive point charges

  The electric field showt gott/6xzc-;n

  Can electric field lines intersect in 64 o3qc g; )hv(fkyes wqw5c(ffree space?

  A solid block of metal in electro9 im8iy*e+ p7todkv;q static equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block; pqvemi8o 9kyt*d+i 7's interior.

  If a solid metal sphere and a hollom+lje 0kt hkf)b 0w4)nw metal sphere of equal diameters are each given the same charge, the eljkeb+wt hk fm0)n0 )l4ectric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniforev8;h.dipd b s2wg(u4m electric field is directed straight upward. What can be said concs;pi 4behdw8 (.g2duverning the charge on the block's top surface?

  If a conductor is in m /-kt zo(gbncpc) 4 f4k4.arkelectrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sab50 4wa )vl) zuf p056pfomwephere that is grounded. As compared to the case without the hozmp0bl pfafw) 0uv5o w46 5a)ellow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static-nly6w97bpyth6(mi a equilibrium.

State Gauss's law.

  The charge carried by one electron isml )(lb+br-t x $e = -1.6 \times 10^{-19} \; C$. 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 many more proton+c;j z,)t4i v/eeviybs than electrons does this pi zyi/bjt v4e;ci)ev,+ ece of plastic have?

  What is the charge on 1 kg of kqdn.(6y++dqo xjou1 protons?

  An atomic nucleus has a charge o:n jq9 (,tfymlf $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, have charge valuftw ()jqq ;bb2icu/j) es of 2.0 and -4.0 mC, respectq; wjj2bci/)qu fb)t(ively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them iso*ccq h1(,kxp mk/dq /vdi m88 1.0 N. What is the magnitiq,/cmk/8h (*voqx8md ck1dp ude of the second charge?

  Two 1.0-C charges have a force between them of o4s2 oq/9n)a buvk2b; x (0qpo qxx2og1.0 N. How far apart are they?

  The force between a mk n 0nr 0fkd7xy.utjv13ue +4$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N force. If they ur)zc9qw*6h w1wh8 wbare moved to a new separation of 8.0 cm, what is the electric force between61h hb *98wzuwr)cw wq them?

  Three identical point charges of 2.0 mC are placed ojt-1e;7pv l:f 7e.sn c7lq fbon the x-axis. The first char1 -7;7soq:jbtfe e l7c.lpnvfge 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 the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is place,v gj j0q4nnk;x2f82rnura 3b d at the origin, -2.0 ,;garj 8v40xn n2fq r3kbjun2 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 force which acts on the charge at the origin?

  Three point charges are located at the following positions: :p3w4xypt8 yd d,e3ki 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 ppdxyi: ,4 38edt3 wkyforce on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second poin q,x,n- -l3omsv uy5alt charge of -Q is placed at the upper-left corner. It is observed that an electrostaticvnul5,3aqlm-o-xs y, 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); Q2 = -1.0 nC is at (0, 0.10 m)vlqfr j40q c oxrku+/,nt k5(9; Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net c0rrlx qju4 ,/ftkvn(9qk+5o force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m,. y e(ohy1q4px 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction o qoy41eph .(yxf the net force on the 5.0 nC charge?

  Three identical charges of h. zvbe0)c9rng x; q4-gx*zx s3.0 mC are placed at the vertices of an equilateral triangle wh q .b-)vxgx *4e;c9h0ngxszrzich measures 30 cm 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 +4 bpt ;wq2 g34b9weat7uQ, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such2uebwga q tpb4 7t;w93 that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C chargu4e ks7s0vvncw4kj-bh(n ,w 7e is at x = 4.0 m. Where on the x-axis can a third chars0w,cnvk(uhev4 sn 4 -jwk7b7ge be placed so the net force on it is zero?

  Charge +2q is placed at the origin anc0y/b3q u1nsw73 yn5q y s(qauj 9klt+d charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it iqqynl5q tk ja yc9s 731bsunuy(/0+ 3ws zero?

  A copper penny has a mass of 3.0 g. A total fhhp)y2/h3d uof $4.0 \times 10^{12} \; electrons$ 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 granlh 56tzj.7t fvity by the attraction of a fixed proton some distance above it. How far above the electron is thenh tzf7t. 56jl proton?

  Two 0.20-g metal spheres are hung from a comji (cca3knb 01mon point by nonconducting threads wbj0c3(i nack1 hich are 30 cm long. Both are given identical 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. i jwmd7 e7j)5b nuv2q2 What is the magnitude of the electric field at a distance of 1.0 m fr5 e)d2 27ibnwjj7quvmom the nucleus?

  What are the magnitude and direction of the elect:hynepnnv:a)sjclm 3i(g .,0ric field at a distance of 1.50 m from a 50.0-nC g:pany):vih . nmnce3( jls 0, charge?

  A 5.0-C charge is 10 m from a small test cba*whs6clv -9am: c7 qharge. What is the magnitude of the electric field at the loca7sa 6wb9clv-h:* mqac tion of the test charge?

  A 5.0-C charge is 10 m from a small test charg (ptj7 mo:b l99*ycneze. What is the direction of the e9m ln* c j9:o(p7ybtezlectric field?

  A 5.0-C charge is 10 m from a small test charge. What i v1vknnu d*ac 4f j/.tj+(ar,hs the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chargeuac1 +hdnvvjt/ f. nkj* (a4r,?

  Two point charges each have a value 5 pj bzd 4rw60/pv:k*bkrj s2kof 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two charjj4 * 026/brskpz:w5kd rvkbpges?

  A 5.0-mC charge is placed at the 0 cm 9u)lp:kr2aqht vd.+y.n u9b h1db(az mark of a meter stick and a -4.0 mC charge is placed at the 5 )9 d: .lu.9 bphara+ nkvq2bu(hzytd10 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm markhzc 2d1 )d*vba of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining t c*db2d1h)a vzhe 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 m.z5bz.vnx:w/pob 7)a1jejyzzekg) u +i52( k c What is the magnitude of the ele5z:v 5 1 a zz i2g7kpuboe ej+b.(z)wxy)ck/jnctric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The l)q.sa7ez b 0s,pq6aswast corner is occupied by a -3.0 mC charge. Find the electric field at the centep0qs6 zba,eqa ) wss7.r of the square.

  Consider a square whicho(/h ynh.hs*y( 5 de(u -bpwv07 aleur is 1.0 m on a side. Charges are placed at the corners of tn(eew.((h/ u yhb-0 7d rs*5luayopvhhe 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 magnitude of the electric field at the square's center?

  A force of 10 N acts on ayrd8g*p3c ecr6vx a 885) lvzy charge of 5.0 mC when it is placed in a uniform electric 8dv8yg*3 6l cx cayvp re58z)rfield. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass osfs85lgx61lp7 x -kysf $5.0 \times 10^{-3} \; kg$. 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 electric flhd* iyufnk3 5,-h9u uk71 oykield of 6000 N/C pointing downward. What chh l,7yfoy* uuk9135udknkih -arge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is pl gxopa t0m5a ,s 1w:3ik6njxw)aced inside a uniform electri 1o5i6: k, jxntaw0m)sxgwa3pc 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 +2.027l slg5ji7,cvx(c iuu5 tgp4us;- ey mC. What is the magnitude of the electric fy sg5,u sx57v-eil(uljcc2u;i4 p7 tgield 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 ere4efd(xqe (*pqmn ,9lectric field 6.0 cm from the center of the spheem rn,dxe *9e ((4fqpqre?