State the law of conservat:gycvd:lzw.-j 8gp d8ion of electric charge.

  Is it possible for two negative charges to attract ear*rk w of/7l99igyf9 ych other?

  Is it possible for a positive and ahno 6 kwmfdq (0n+3+vi negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process tbxx:o o2:6zrpves 8 e:he glass rod acquo:2: peob sxze8 v6:rxires a positive charge and the silk

  A proton carries a

  The model of the atom shows yqw n/fex roba 6n(bl(m,//d1a

  A neutral atom always 3bcny0 /ua l*ql8(lldu9wsu-has

  An atom has more electrons than pr ma(bn2+)grki otons. The atom is

  Materials in which the electrons are bound vkqna2r 9 la1u6ery tightly to the nuclei are referred to aaq 2r u6l9k1nas

  Materials in which the elecocl 4( e:g5 6wva7flz0tgf(xytrons are bound very loosely to the nuclei and can move about freely within the material:a46wltf7(ceg v (go0fx 5zy l are referred to as

  A negatively charged rod is broug.nfb0sz*9 y+xabu yt(ht near one end of an uncharged metal bar. The end of the metal bar farthest from the charget.n0yxs+yu zbaf b(9* d rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are pl+ px6;1sk73 shro.,kpqhgqklaced near each other on an insulated table. pkx7 +qhs kkgor;31h,6s p.qlSphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posr2b o:h(6q d1sgs7pn,ew1mxyitively?

  An originally neutral electroscope is brieflyyty2* dnnq,rqu*my n-o. zd)0 touched with a positively charged glass rod. The electrorondn n,2)*q.qydy m- y0*tuz scope

  An originally neutral electroscope is grounded brieiw vhd6gp7mws7c6h3tnu5+e:rc2op1 fly while a positively charged glass rod is held near it. After the glass rod is removedw2 5:vw 7uste6hpc3 o7d6+cphmi g n1r, the electroscope

  A positive object touches a neutbmk*l g aj. y(y7wlv7-ral electroscope, and the leaves separate. Then a negyaj-*l k(v.gyw 7l7bmative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. r5hn3)msqx )bh k()yw mwai(6A 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 o)hh(k)m3 bwiqm6() w syxar 5nbject. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb coj5w /bzv4.bsb q w9ll*nstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance dj7cgd)st: ,gp8rjjim l9j58d +z kdw1. The first charge is larger in magnitude than the sed8sdw8lj1+itgr:k j z5,g9pm)d jj c7cond charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near t ; a;qrah5-wbpd1j/,ir+l6 s p6zhd feach other on an insulated table. Which statement best describes the electrostata a6difs+wp ;l1j;6 hd tr5,/ prhzqb-ic force between them?

  Two charged objects attract each other with a certain force. If the chargesz( zd+ 3j5a74nlu.h k 9sqcumd on both objeu.um ns(5ackl zd+jq9 7h4d 3zcts are doubled with no change in separation, the force between them

  Two charges are separated by a distanm,hpo/;(o c qpce d and exert mutual attractive forces of F on each other. If the charges are separated by a distanccmop/q op,h; (e of d/3, what are the new mutual forces?

  Two charged objects attract each other with a f 7nyua u61z0cr7job y0prs /d2orce F. What happens to the force between them if one char0u 7p/6rd7uayy 1c 2nbjo0zsrge 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 distanp4znocv +p,/a +s6bde ce of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is place+pop/asc+,n4e bvd 6z d next to the first electron?

  An electron and a proton are separated by a distance of+zx0f5wc, m ew 1.0 m. What happens to the magnitude of the ,z +5 mewxfwc0force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are sepjh/qcwkf * n64oq bw65wt(n) marated by a distance of 1.0 m. What happens to the size of the force on t6)mj(w * q5 k wtwno4qcbn6f/hhe proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the centt q:73zwb3ul)/uzy m ter of a square. When 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, idb7m t/qy)wz :3lzuut 3entical 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 t9;fh56n qs3)ziyq kevf t v-i0riangle. 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 centesifq h56v;y -3qfie0) 9knvtzr charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is notrdaa)d9p/.6. dfb lc ic;uqf9/pjbw d2y0rf3 a vector?

  At twice the distance from a point charge, the strength xs7 p9mgug+wsza86t ,of the electric field

  Is it possible to have a zero electric field value 2:u0qll cr1juuv+ )zmbetween a negative and positive charge u+u2zm:ucr )0ljlv 1q along the line joining the two charges?

  Is it possible to have a zero electric field value between two positive c )-pd gtxu*y7pharges along the line joining the two g)tpdpx7 u*-ycharges?

  Electric field lines near psitivi,pt1kqk/7zizmlmv9p 5h-.+e rn d s1 e point charges

  The electric field shcex:0;j; i yd3 ;kofiwown

  Can electric field lines 3gakr :7 jot-lintersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uloy99q2tzg qya, 35 ghniform electric field. Give a statement concerning the electric fie2 93hq oa9zlt yqg5gy,ld in the block's interior.

  If a solid metal sphere and a hollow metal sphere8**r fhdehcwtujt * eq5o3f*8 of equal diameters are each given the same charge, the electric field (E) midwayhejr8t3w 8f**t c eo5*u*hdfq between the center and the surface is

  A cubic block of aluminum e9kgyb l.pwtrwfc:l-4fu :x * 74tx*erests on a wooden table in a region where a uniform electric field is directed straight upward. What f ut p 4f-y*et:4kxl.97b*rxww:e glccan be said concerning the charge on the block's top surface?

  If a conductor is in electroung s*vx-*t2vstatic equilibrium near an electric charge

  A positive point charge is enclosed in a hwuw oy*9zja w6oo 15wnpe;s-8ollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere ha8ew* w9j6n5pw wz 1o-s;yauoos

State three properties of conducto)c hmg-+z o iq1bcfx/-rs in static equilibrium.

State Gauss's law.

  The charge carried by one electron iay*z1w*e nim ;hedy dwq (a943s $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge,p)kk*urp9wh1ez* s72 rm g7phlx9p x of +2.00 mC. How many more protons than electrons does this pp ),xrpu 9 1h kg*px72s wzm*rpkhl79eiece of plastic have?

  What is the charge on 1 kg o s(ua are e(nj,4bd1(uf protons?

  An atomic nucleus has a ctn zab1pur75wx3j t -7harge 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 mC,fk7ioht(* jql0v1m w.6luz-mgsq 8ad ,jo30 s respectively. What isqs(3o uvq.sm6 o 0d zj17-a,gjk 8ilh* t0mfwl 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 is xduhy /xs, ,1 j,8xojd1.0 N. What is thjyhxxd,8,,x /j 1dso ue magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apajq3x)mps* y8cll3 bm*6ap5amrt are they?

  The force between a bk: q7o(r qas6f,t8tq $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience k8b.osxa+5 sp a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the eleck85sb+sa.p x otric force between them?

  Three identical point charges of 2.0 mC are placed on to9zm)g z nd, x+:3fenche 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 ez+9:)m3 ,dg foznnx celectrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A che.e1+ :eex4-pfot k9m1 jaqfxarge 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 a4 1ea- . emetxxkqf:jefop9+1nd direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.0 u5( kjigv)-it0 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 on the j(5kui -ivgt) 3.00-mC charge?

  A point charge of +Q is placed v-xu)0hdr )le0,x hsvcm; k-rat the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatvc r km0,hxl-0x -edr);husv)ic 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, 0.1ehnk 5cv0( w7k0 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the en(w57 kv0kc hnet 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. x2 0q6ws+nkcr10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC charg0 6kswrnxcq2+ e?

  Three identical charges of 3.0 mC a9i:f+h9v o apo2rf0t sre placed at the vertices of an equilateral triangle whic tr09a:h+ 9f2 povfoish 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 +4Q, which are separated q66jusg 7 x7d7uvbub7* e.z- mxp1gz rby 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 actipuxmj7eqz7b*gzuv6.6g7d-x b r us 71 ng on it would be zero?

  A +3.0-C charge is at the origin and azxs..l f hfou4s5l -g5a67du(wz iwe/ +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it isu-ez xf.s 5gwsz/6h4 laf d(57l wiuo. zero?

  Charge +2q is placed at the origin and charge -q islfee9cr y tvz;()-a0s placed at x = 2a. Where can a third positive charge +q be placed so that the force on(cla;ys e-ez t)r9v f0 it is zero?

  A copper penny has a mass of 3.0 g. A to-g4ulny *-cu htal 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 bjzw0ezy58lc4 ( *l,w ivodj4))qhz lty the attraction of a fixedv(jcd *we5l)htolq , zjy48 ziw 0lz)4 proton 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 noncondu*h7yx5q kmsl4,h(eg i cting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between qh,s754e lim hxk*gy( the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitudec:ea t9h w::ef of the electric field at a distance of 1.0 m from the nucleus?f9wa: et c:eh:

  What are the magnitude and direction of the electricenck1o gq:z yu bx.,n(u(;m +r field at a distance of 1.50 m from a 50.0-nC charo nzu+(xu k (n:;ye .,gb1mqcrge?

  A 5.0-C charge is 10 m from a small test charge. What is xobcskf1ilz7vr7g -4j lm34;the magnitude of the electric 7ljlo4 r;7vxc3f -4g szki b1mfield at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What njon7b( p8rn 848eimqis the direction of the electric rn (8b4p ei8oq8nj m7nfield?

  A 5.0-C charge is 10 m from a small test charge. Wy0.l u5ga gc nn:l ;zox6+.phuhn7(zahat is the magnitude of the force c.a5hx np+6u g7nlg n;z.zahluy(0o:experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a valu2kq d0fpht:--l em3p ze of 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 cha0z qhkfle:2t-3mp-d p rges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a ktzo0haz.qv(wtkuos,3p0g 9z5ji 41m+b t +a -4.0 mC charge is placedzt qg9s +u1iazb5o,k. h(j30zt wv0 ao4m+kpt 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 stic:(j))vrwny 6.oluq b zk and a -4.0 mC charge is placed at )oq zy) 6.:wlurbv nj(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 at x = 0 and x = 0.20 m rkg *;h3f hyu**l egb-kfe+.l. What is the magnitude of the electribl. ;*k gr-3 +heueg l*fy*hfkc field at the point midway between them?

  Three 3.0 mC charges are at the three cornerd, yeb) hry,gqu5j2r j,j2s 0as of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fid5 sq ugr yy,0,a)e2 jr2jh,bjeld at the center of the square.

  Consider a square which is 1.0 m on a side. Ch: wij d1ym3sr9arges are placed at the corners of the square as follows: +4.0 mCjis9: dm1wy3 r 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 oay, hs/ epx;5a charge of 5.0 mC when it is placed in a uniform electric field. What h/ps5ax; e,oyis the magnitude of this electric field?

  A particle with a charge of 4.0 mC has:ds f3my+w,uw 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 electric fik job0v dbh4 ilg658d)eld of 6000 N/C pointing downwa 64vbjloki058 g)d hbdrd. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nvhkao,netg 8 o d:.//nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitutvn:h e/og d/a k.n,o8de and direction of the electric field?

  A metal sphere of radius 10 cz .l snq3wjdjj;u3 +6rm carries a charge of +2.0 mC. What is the magnitude of the electric fieldjz.qdw3ujr +6n s3jl; 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a ch*z 7.lo,sqvr x0pjmiu)i6k kd0 2xa 81fc*jkm arge of 3.0 mC. What is the electric field 6.0 cm from the ce 00cj2plxmmkzx1i,* qk ij.6d*uos78 )rfva k nter of the sphere?