State the law of conservation of electric chat+u1da3 cm n:+li be-krge.

  Is it possible for two negative charges to attr)o+x()kszp hfact each other?

  Is it possible for a p4tb+1yhujw;xjab) 7 p ositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the pr-q /j.ec c yxiysj). 1ea7:7vmqf toczt +x;l9ocess the glass rod acquires a positive y.s+7/qx)q;a mi.czt7xoc fy-ej9:v1ej ltccharge and the silk

  A proton carries a

  The model of the atom show 2zwx3+9nk qkfs a

  A neutral atom always has( 6cr -ggv kyuyjda376

  An atom has more electsfz xay97tdnx 9c )v+2rons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refermhlsgk6j6+(l: p*dr fred mdlrjks6l +(6gfph :* to as

  Materials in which the electrons aw. q-0*hrv nufre bound very loosely to the nuclei and can move about freely within the materih.0f* vqn- wural are referred to as

  A negatively charged rod is brought near one end of an uncharged metal fp* or h0*p4++racut9ob .oeobar. The end of the metal bar farthest from the* p.o+pec r+atbr*o4o0 h ufo9 charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neus a-4ce w9uqco/*h mt)tral. They are placed near *-eswhcquct4o a)9 m/ each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chmcosw;6w6tz gr *x2w7arged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positive ) /divt9y5u:icdat ashv .y)8ly charged glas/y)d9. a:hys 8v id)v5 citauts rod. The electroscope

  An originally neutral electroscope is grounded briefl/ hp52vsc oxn 6/u+naiy while a positively charged glass rod is held near it. After the glass rod is removed, thux/6vi+/chapn2 on s 5e electroscope

  A positive object touches a neutral electroscope, and the leaves separatedag:4ers4nl- 5 xgp 8l. Then a negative object is brought near the electroscope, but does n 5 l4-xae pl:srg84dgnot touch it. What happens to the leaves?

  A large negatively charged object 8 f. 1s,mprsr nm,s;,v 8zl m7duwt8vfis placed 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 not touch the negative object. At no time does either ball touch the negative objec m; nr 7s.sfvmw,uv,8,z8p tdrm8sf1lt. What is the final charge on each ball?

  Charge is

  What are the units o3kgb vh0a0 (psf the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d 2o j0ff4q1 naxjp gr,yytq9q-p5q.h5. The first charge is larger in magnitude than the second chn 2jx9-atq0,qrfq5qp. y4f pgo5jh1yarge.

  Sphere A carries a net chz0*.ow ,vwa ep*zht/3i-re(wjjvs v;arge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes tov*w3vr;hpw(ae.j s0z/,-*vzi j e wthe electrostatic force between them?

  Two charged objects w;3s-klx q90s un9aan attract each other with a certain force. If the charges on ba l9 3snu;a9n-q x0swkoth objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual 2:6v4ktc uhve70 (yb* swtumaattractive forces of F on each other.(v27yh*6mts0 vu 4wbktau:ce 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 Fpajob,p 4bf8 r)(c- oa. What happens to the force between them if one chargoo,ppbjfc(- r4aa) b 8e 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 arqn2us8mz yeb 4 s+0,lwe separated by a distance of 1.0 m. What happens to the magnitude of the,lwb2mu0s n+4 y s8eqz 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 1.0h ejmiwq :9f:t0o.ur) m. What happens to the magnitude of the force on the first electron if a second electron is placedo: te:i9fq )hju .wmr0 next to the proton?

  An electron and a proton are sedn*h-x9obj uyn juyzq3y*11 :parated by a distance of 1.0 m. What happens to the size of the force o3jnyb*dyh x 91:n* -ozjuuq 1yn 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. jewjxo1 /iq59When 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 positive charge at the square's center. Now, identical charges of1qj 9e5jwxoi/ -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 placed at the centroid of an equilat le m6z 51g)rxt0mxg mjq-p/o;eral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an e x-gzt/jx5g)mq l rmom016p;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 placed at one of the other vertices?

  Which of the following is i/r gf, .v(g97ow 0h 8oidi nckhl.kn9not a vector?

  At twice the distance from a point charge, the strengtr4 vizn-okz b ht4g0-;h of the electric field

  Is it possible to have a zero electric field value between a n8 lup lh3vj0jm7yt )o2egative and positivpu)8 0mol 2lj7hyt v3je charge along the line joining the two charges?

  Is it possible to have a zery fjzpw voz*. (dk)a)qb2fe+.dkq0a 0o electric field value between two positive charges along the lindo baqjvz0 zka.+)qdk* 2 0fyfp .)we(e joining the two charges?

  Electric field lines near psitive point charges:sl a+92zz(v 6j)eq e+szut ei

  The electric field shown 5h2smm 0i s5nl

  Can electric field licy t2v;+)v5b*u c flbmt 1lmq,nes intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform ei32 bf+ cr)jw ew9go5slectric field. Give a statement concerning the electric field in the bl5)w3gw9 b2sicrjf o+eock's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each q2 ( qd1d;ejwxfr68ymgiven the same charge, the electric field (E) midy(xq ; w2e18qr mddfj6way between the center and the surface is

  A cubic block of aluminum rest:kjqd5 p01ttdb( -ldjs on a wooden table in a region where a uniform electric field is directed straight upward. d 1btdj(l: jqktp-0d5What can be said concerning the charge on the block's top surface?

  If a conductor is in eleu(s v/ iu.x(anctrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere t4yg)cm6j. 6 jrt/f(zsl abd9 hhat is grounded. As compared tr./ jh6f (mc 6 bls9ytadjgz4)o the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of cogp* m, )ho)dq:nh )khu 9fimr/nductors in static equilibrium.

State Gauss's law.

  The charge carried by one electrv( n39mh2.mhscr k q6o)riv h/on 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 ht ezazx 68b/z:s ce;6b:dd /plas a net charge of +2.00 mC. How many more protons than elecp6t8 b:;xsezdeab czdl6/ z /:trons does this piece of plastic have?

  What is the charge on 1 kg of protkb o .:fyj4;wz /uzafl8/q)vfons?

  An atomic nucleus has a charu,w,lzj,5 ff- linp( ige of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sepa :qcakqj98,+h,2algspv u t2;j etpc8rated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the mag9cjq2:pa,h2kau gv,8tl ;qesp t+ cj8nitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between t0 vpv19u8zjv d:e58 yzmx)cei8h 5vue u3r;nrhem is 1.0 N. What is the magnitjic1 u zd :9;5nz0x8h8rrv38eu)uvv5eemv ypude of the second charge?

  Two 1.0-C charges have a force between t;;n;p5kbsu,;yh hj smhem of 1.0 N. How far apart are they?

  The force between a ck94 3mwitvp*;g 4gwav,n )d k$30 \; mC$ 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 t1;vw3zdp ltd jd: +:xyc2-i 2jblf f9mhey are moved to a new separation of f+yw:2z bfvd9ld i2mj 1 :dlt;j-cpx38.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are(nr-u;mpaii2 9 gm*zj2zo fk2 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. What are the magnitude and dir rzk(*;9 ujonimpa i2z-f22m gection of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. vk6m ), wxwfla;r8 j-d:eq6l cA 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 magnitude and direction of the electrostatic force which actsejw a,f :m8w kvlcl-d);rxq 66 on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x =cn l.:vft*uteplf3f 6i3* *ku 1.00 tf 6un. kp:ff*ce*l3vt3uil *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-mC charge?

  A point charge of +Q is placed at the centejexn wa)*- ox+cmkl:6r 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 actsxl:cxwj a +*e-)6monk 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); Qsazb: vybg ecm glg,ez:;8//;3 = 5.0 nC is at (0, 0). What isgy,:bse8;: eac / v mb/zgg;lz the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m);xgwazyo0/o1 231z u.iaep/bp Q3 = 5.0 nC is at (0, 0). What is the direction oaz21yazu /pewg 1x 3p/io .0bof the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC arc knbriolya8/u2c . k0: drg/3e placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the elec/ k8 k3cc.roua:0/ 2igdlnyrb trostatic force which acts on any one of the charges?

  Consider point charges of +Q-eljoxel1m5fz5i,q8,lsb t 9 and +4Q, 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 such that the electrostatic force acting oos5tj,z mbf, ql9 5lix1e -e8ln 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. ak5cgk p 4v3m0Where on the x-axcka4v3k5pm g0 is can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -qxv9td-m x x1.w is placed at x = 2a. Where can a third positive charge +q be placed so that the force xv-mwx19 dxt. on it is zero?

  A copper penny has a mass of 3.0 g. A tota7fe 2/wzz0pnml 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 theqn/uw6lqj;i7 (a d1oe force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is th q7d jiq6au wone1/l(;e proton?

  Two 0.20-g metal spheres are hunsa4p2 my- ncvqaa67/ug from a common point by nonconducting threads which are 30 cm vsapya-64/ 72uqcma nlong. 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 +40ei- hmlb( 98smo. What is the magnitude of the electric field at a distance of 1.0 m fl(9oims8 hbm-rom the nucleus?

  What are the magnitude and direction of the electric field r7awugc;d ..qat a distance of 1.50 m from a 50.0-nC c7g u.c.w; rqdaharge?

  A 5.0-C charge is 10 m from a smal5zl6-f 7b-ps 0en f pqczmva-/l test charge. What is the magnitude of the electric fivl0sp/ mzaz5e-qp-fc67 b - nfeld at the location of the test charge?

  A 5.0-C charge is 10 m from a small test,x2xih8z, gh6,g ,qyzr5( a xjqraz2ff9 nf; o charge. What is the direction of the electriq,, ry8g igxf r no5 z 2(ha;q,,fa6zz2xjhf9xc field?

  A 5.0-C charge is 10 m from a small test charge. What istr4+ 7wvf31 1igejkt b the magnitude of the force experienced by a 1.0 nC charge placed at the location of the4ri+gt et7v1k bw 1jf3 test charge?

  Two point charges each have a value of 3.0 C and are separated by a distancrb2 ,jt.wj j4px/.xds aisg,6 e of 4.0 m. What i4wg.6d sbsta/j ,j ir2xj.x ,ps the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick 8, eu.:fky s4-iy uptyand a -4.0 mC charge is placed at the 50 cm mark. What is the electf s t,euy :ky.4-puy8iric field at the 30 cm mark?

  A 5.0-mC charge is pqhxo0) 07mnt qlaced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. xq) 7noh0qmt0 At what 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 = 0 and x = 0.20 m. Whxi ;;l8o9ve0i n8drzt92v wct at is the magnitude of the electric field at the wd0 c8;l ;ot8n9tirixe 9zv2vpoint midway between them?

  Three 3.0 mC charges are at the three corners of a square of side h.v+p87byux )mb5t jod:r)uc.o jn2 y 0.50 m. The last corner is occupied by a -3.0 mC cha y .pun:.))uvomb 5t+h2 j8byjrx7d corge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side.4rz pxi+f e5087 svpjw31 d b0mo(mrfr 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 i zsprj4xr8dm e(b+fi01mf rw35vpo 0 7s 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 pl 0urjf2dbru-;7+ q w -pavuvq2. xsi0vaced in a uniform electric field. What is the magnitude of this electric fievv x0du-ui+wr; rb2f-0aqj2 .vuqp s7 ld?

  A particle with a chargt7y0:pt p (7to(vxmcm e of 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 electrip xlb 7qv5fq7 (,ede,fc field of 6000 N/C pointing downward. What charge must be placed on 7(fqlvfqe75 e,, pxdbthe ball for it to be suspended?

  A foam ball of mass 08wra yc: )fr/-dx.cr,)z l pyb.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended)rwx 8.-l yzpr)y/ ccdr,:bfa against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries 2pmz5+)ha ,vuo byv9v a charge of +2.0 mC. What is the magnitude of the electric field 5o mz bp95vvyu+vh)a,2.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of wq7b--yzm(s7.mj l bfc.j0 ey3.0 mC. What is the electric fifc.s wjy0ylqzem(m7 .b-j7- b eld 6.0 cm from the center of the sphere?