State the law of conservation of electric char -v nac7wl,w9rge.

  Is it possible for two negative charges to attract +cr4tpvka*8 9o xgrj+ each other?

  Is it possible for a positive and ecj haf10) -g9u8kxfg a negative charge to attract each other?

  A glass rod is rubbed wit -lt 6l ;x(+ (orz+cucqkd1x x:ysc6kth a piece of silk. During the process the glass rod acquires a positive charge and thel(x ctysk1c6+x (u q+t r:ldz;x-o k6c silk

  A proton carries a

  The model of the atom shows;2a/,v) k; ntb v2 +fctaeeeb,i we6dp a

  A neutral atom always hsj9(2bfcin,7 iqoh* bas

  An atom has more electrons than protons. The atpo ,v g6prj+2yom is

  Materials in which the electrons are bound very tightly to the nuclei are ae9*,c0lyyjtoy+ ; c hreferred 9y lcyahcej ,;0t*o+y to as

  Materials in which the electrons 9ey z3u.-mir38c wnwuare bound very loosely to the nuclei and can move about freely within the mater8ur3-3 c9mn.w yuewziial are referred to as

  A negatively charged rod is brought z c6au0. dt4sjb+/by enear one end of an uncharged metal bar. The end of the metal bar farthest/seb uzc tjyab046+.d from the charged rod will be charged

  Sphere A carries a net g3h30rf dqtb 97jx*yapositive charge, and sphere B is neutral. They are placed near each other on an 9 g f tq3yb*dx7ar0jh3insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chargedkn/g*y ;hxm9o + gvgu3 rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched wit9 n (pru4wn7p5 wfaomnuo+88rh a positively charged glass rod. The elec+ 5wr8pf94w(pa unr7mu o8no ntroscope

  An originally neutral electroscope is grounded briefly while a posjy*1eoky2j zikx5-3 xitively charged glass rod is held near it. After the glass rod is removed, the electroscopey j oz5yexj1xikk3-* 2

  A positive object touches a neut.m -( hz*zsmr/kly t;/pm4nn cral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not tocnzmrm hs4nyz(m / *l.t;/pk-uch it. What happens to the leaves?

  A large negatively charged object is placed on an insulatq4a/31h ufxbt9aa ;1km s lo/fed 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 t9 bhmalfs /xkafo1/4qu ; 1a3first 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 l 4ojarqai5+0Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d.9kvoo4pe.bc .pc ;3 xg The first charge is larger in3pv .eo 9p.o cx4cgbk; magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near :wvhq qdf9i(:x 6: ioyeach othe hx y9vifo:qiw::( d6qr on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each bybq6o6h)izo yb 8:ipt m-*d0 other with a certain force. If the charges on both objects are doubled with no change in separation, the forc8 hq:m0iby*66bboyzpto d)- i e between them

  Two charges are separated by a distance d and exert mutual attracsw3h 8z q(;gs+xgqe9ctive forces of F on each other. If the charges are separated by a distance of d/3, what are the newhxg;weq(cq 3 zg9+ss8 mutual forces?

  Two charged objects attract each other wia7 8x-d1mfsm6i4zf f3dhfy6m th a force F. 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 redu-xhfmfmdfad8f s i4yz 616 73mced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.kl 7hfpaap kek,62w+10 m. What happens to the mh fl6wa 2pe1 kk+7,pkaagnitude 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 dx*ly2h g *(admistance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the proton d(gya*m*hlx2?

  An electron and a proton are separated by a distance of 1.0 m. What happens todcd*h. v8 ivty lmoa22n -k:k8 the size of the forceyk 2mvvd2l dhc. *n t:i-k8o8a on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at t kusm5*72x*mgvhpz ur) m(eg0he center of a square. When a second point charge of -Q *ugvz xm0rug*s pk2e)m5 (h7m 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 is placed at the centroid of an equilateral trilke-u-vbh nn4ug -qr mq)9k 9 +)jg9htangle. 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 dueue)-g-mquk9-gn+qbvh)j lrn94k9t h to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vectorc 7db vs o-6d2*:jamyr?

  At twice the distance from a point charge, (ec s+7/ ja7b8z hca 6vmnrv*cesd0.nthe strength of the electric field

  Is it possible to have a zero electric field value between a negative and p-,a.gv sdhs8a,cbu( ajv3* hkositive charge along the line joining the two chaau j *-h8vdk vhbagsa cs3,.,(rges?

  Is it possible to have a zero electric field value between two 09 b8k67z bo2osg .ds*u 4uuoimloyb4 positive charges alom 94*0slud46yok .zusb7 uio2bb g8oo ng the line joining the two charges?

  Electric field lines near pqe1i66/ p -ohc2s:h u )hrawcm*s.lsc sitive point charges

  The electric field show ms9gi. u9xu7ln

  Can electric field lines intersect id ncwe/pz(n+ljf56:h n free space?

  A solid block of metal in electrostatic equilibrium is place cmp+z fc6)d5sxmoof:;j d;9)o s2 hlf/bmk9ud in a uniform electric field. Give a statement concerning the electric field in the booo:bl9mjsp9)2;) c mcd;x k/ufhzsm+d f6f 5lock's interior.

  If a solid metal sphxq 15v -ulngf nl/hmn39fa 0 wks24m0iere and a hollow metal sphere of equal diameters are each gi k32ghn/1ain9 0l-q45f0 x vlfumsm wnven the same charge, the electric 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 unifowmzi(8 p jd*g/rm electric field (gmp*di/ zw8 jis 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 chargeau 67-f0 pg-n/oprspl

  A positive point charge 4o..a6 xajzah te 5n0kis enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above t5a4x6tzh.ka0o . jne ahe hollow sphere has

State three properties of conductorbfck6 g3+jjuhg j1.f3s in static equilibrium.

State Gauss's law.

  The charge carried by one e.7zicao;1/z ydwq d(qq ,zl;u lectron 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 many more protons thao dgr).dyuoal0*:/vn cnc)(- q* hfvl n electronro*.d u0/*co f)ga(nvydc l)v l-n: qhs does this piece of plastic have?

  What is the charge on 1 kg ocb0 f+b95kg mof protons?

  An atomic nucleus has zby+8 ap(nq r t;p/bu8a charge of $+40e$. 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 values of 2.0 and -4.0 yoe 7+(4aepv dmC, respectivelyve a+oy 47dep(. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15sj2(ginplich ktc ong- 16n/x*: 3d6s 4u oh/e m from a second charge, and the force between them is 1.0 N. What itn2h uis/i dn(:3/kco 6ghp-1censx64goj* ls the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart ara bjk6*2g p/+y-jri 0 jy)psege they?

  The force between a yto ha 35(xfeu lb:.uvn3t9e4$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiewjz+xeizkhny)a0i11 b l7y / .nce a 1.0-N force. If they are moved to a new separati)j.hk1xi b lz0zai ye1y+ n/w7on of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placqyj) w7o9dv(ded on the x-axis. The first charge is at the origin, tddj )yvqwo7 (9he 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 plac(eq6fg1z u n4bed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm mn(f6qe4u b gz1ark. 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 posit8lu t 6go/r6 *u+xzrzdo)zq 8fkxx0+nions: 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 o )rz +qnzdx+u/z*6u rfogl t8xo k086xn the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a izvgicy9u 5y(avh ;0u 6cc9cfx (4 8zisecond 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 cent 4z(6 zvfiy yh 5ug0;u8aicxvc9icc9(er. 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 5nwdyx jxhhxxjr1 d76 6h*5n4, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnixh 64nd jx6h5j7x *hx5r1n ydwtude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); tcsx)g /h.cpz6z- e 1x4 mnn8eQ2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Whatzp84 cegz-s) /n1xhec.6nx tm is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mCkwr ;89u25+izly rk uk are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the wu9r58 lurk k+2yi;kzcharges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what poij,*4r q jwbid;qxs,*s ujvj+sk4f + -hnt, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic forjjsujxsqdb4+ kfi4qw,jh v-,*r *;s+ce acting on it would be zero?

  A +3.0-C charge is at the m;v 1itc(64s2ym( eix8jnlqe origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a thirnixjtevs28m(m l 6y;(e q14ci d 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 = i7e2ad+q +k mi2a. Where can a third positive charge +q be placed so th2+iqm7+i e akdat the force on it is zero?

  A copper penny has a mass of-gustv a x(.6f 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 attract-kbb* / aw(mxdu w)k+fion of a fixed proton some distance above it. How far above the electrobmfbkw/ u *+) x(ad-wkn is the proton?

  Two 0.20-g metal spherjuhx /kqp yscq/1m3 )yg(;u3res are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until th33u )gj sry;qumk1x/y /cp (qhe angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What iatb o3z3e8)-d /lvkvl s the magnitude of the electric field at a distance of 1. t-lbv3aev/k)3 l zd8o0 m from the nucleus?

  What are the magnitude and directio06jyqg:s-dba qq .x 1dtcn8z:n of the electric field at a distance of 1.50 m from a 50.bn-1 j .qag0qcs:z8dtyq:6xd 0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the cls4*-xv-coh electric field at the location of the test chargec-x 4cv hso-*l?

  A 5.0-C charge is 10 m from a small testl5hdj/ h17umns r q574xoo-u z charge. What is the direction of the electric 1mrn7 47 lsu-5d5 ohuhxqj/ozfield?

  A 5.0-C charge is 10 m from a small test c yu8t,0b pldlbpae(: gm*x97v harge. What is the magnitude of the force experienced by a 1.0 nC cha*:v ul8b7lb ,tp 9ge am0pyx(drge placed at the location of the test charge?

  Two point charges each hacn. t 0bha7ww 9ft,v8ave a value of 3.0 C and are separated by a distance of 4. nab7v.fa , 8hww0tct90 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is pb2usx9 .7ny2wjg xs1ilaced at the 0 cm mark of a meter stick and a -4.0 mC charge is p.9ss7 y2jxi wb2n1 xuglaced at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC char ol ;fbxy-l)bil6xk2d7,m n8cge is pb6fxlxy) n2 b dl- ,8kioc7;mllaced at the 50 cm mark. 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 al4r m(o6x;csodyjt57 t x = 0 and x = 0.20 m. What is the magnitude of the electric frc4lymtd jo(7; 5 s6oxield at the point midway between them?

  Three 3.0 mC charges are at the three corners p bm9qvz p, e1opv5*o,rp9d( 3uvi6xgof a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the elez6, m9bgqr(vuexppopd 3vvp *o591i, ctric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corners ou xjuxc r5cq6fs5j630 sj( /oef the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0); -3.0 55/f0rcsjqs o3x66ej(xu cujmC 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 placed in a uniform electr3mxaw )1 ui9 ycf3gcw9ic field. What is the magnitude of this electricy 93im3f)cxcw19 u agw field?

  A particle with a charge of ;nbz(le-5y6pmg x5g p4.0 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 gn:t2ki7*lq kna.no/k ci),rt is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for :nlq*7k k,ankt )o.c/i2ntriit to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed bz 5umw)o z8c/inside a uniform electrmwbc8zz u/)o 5ic 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 magnqj(fm f **4lb n1n0jiqitude of the electric fienjin f4f q1mjq0bl*(*ld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carrief7dkhta/m6 / hs a charge of 3.0 mC. What is the electric field 6.0 cm from the ce m f6h//hkadt7nter of the sphere?