State the law of conservation of electric ch+-zsoq u uy22ond5t6iarge.

  Is it possible for twaxenju cwedaa 9 v(5n 1wqa155z29 ld0o negative charges to attract each other?

  Is it possible for a positive and a negative charge to attract 8kwlx0t pmqqx91ty1 b4j5b+-jdg 6fheach other?

  A glass rod is rubbed with a piece of silk. During t0:.yh ykt + d,h1ql(bzm4vt sfhe process the glass rod acquires a positive charge andf1 bt :qszvt(k4mhyl0+.hd,y the silk

  A proton carries a

  The model of the atom shoxaat,(g-k xks 8)jcm7ws a

  A neutral atom always.pp,pqp*d p qxgd,rxqu 4/6; z:s um.t has

  An atom has more electr-h6 dgvwr:ulja* r b-8ons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are rbfzb:r2x9n,q dgwa*2 k2i s0,pkd*mh eferred to as0a,f2hn * sxpdg:ikzr 2m,wk9b qb*2d

  Materials in which th ek8*tytx)rey7m9 k :usda )ryc87ud4)6m glje electrons are bound very loosely to the nuclei and can move about free8u)tm7tkd *4 y7cmeeguyd9jxyr8) r 6)sk:l aly within the material are referred to as

  A negatively charged rod is brought near one end of 5t+wx(dpc j 68 e3zh1px2leuf an uncharged metal bar. The end of the djzxxep p(ht52w8 3lu1f6 e+cmetal bar farthest from the charged rod will be charged

  Sphere A carries a net positivex64r6lrry9 m0z ah i)e charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Wrz0lr ei6 )r4xh a6m9yhich statement is correct?

  How can a negatively charged rod charge an electroscope positively) pbaf3rto1,1/hg b gxw9s:mk?

  An originally neutral elhs:6j// sjm5rba/+ ey4 xrrrmectroscope is briefly touched with a positively charged glass rxj6rrbr/ hm esm5/+syjr /:a 4od. The electroscope

  An originally neutral electroscope is g8:sr dh:0avnsrounded briefly while a positively chargeds0vs dn8 hra:: glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope9 j.dl;*b)+c oirhie 5(fc)ufjob hj4, and the leaves separate. Then a negative object is brought near the electroscooj jf.9cef5d j)ii;*cu lo 4)hhrb+(b pe, but does not touch it. What happens to the leaves?

  A large negatively cq v+hf-68zw qolvm:u8harged object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but sto68qvuw+8:-vfoqm z hlps 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 the final charge on each ball?

  Charge is

  What are the units of the Coulomb constantdc l4fe(3s 4yy $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Thqsay ,,4, vbdztbdpiu6:gn*2a5g: cz e first charge is larger in magnitude than the secon: siyzv a q*b,:2 nc zbagg4dtu6dp,,5d charge.

  Sphere A carries a net charge and sphere B is neutral. They are placedqh6 2:hy 9.p q6xlft*qdk,fk ss(vr0b near each other on an insulated table. Which statement best describes the electrostatic force betq0y* bvskk x.qplf2 h6(dshrt 9:6f ,qween them?

  Two charged objects attract each other with a certain forcti jo 55ngrap5e.nc p+ai28i-e. If the charges on both objects are doubled with no change in separation, the force betweeninigc28 ia-5o5pet n5pr. j+ a them

  Two charges are separated by a distance d and exert mutual attractivgzwf 0ki(m5b4e forces of F on each other. If the charges are separated by a distance of d/3, what are the 4f mgw(b 5kiz0new mutual forces?

  Two charged objects attract each other with a f4gf3p hrgay/)1w :t vborce F. What happens to the force between them if one charge is doubled, the other charge is tripled, and thfgp ga:vhy4rw1/ )bt 3e separation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton d bahg0(nd(dw5s y,i7 7sc0vvare separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first elec07vbnwhd05gsy (7( sdcda , ivtron?

  An electron and a proton are separated by a distance of 1.0 m. What happi ezreqv0u(id::k ) e(ens to the magnitude of the force on the first electron if a second electron z )keuede0r:v i:(q (iis placed next to the proton?

  An electron and a proton are separated x6*y7 q sv(ofwby a distance of 1.0 m. What happens to the size of the force on the proy7sx6wqf *( voton 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 second point ck1f 2n(drmlm(oe 1: hsc7sy-l harge 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 three corners of d2:ysl(mlmn-1 fke c1(7o shr 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)a ivwj*e18o)x-zdzw yoz52z 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.o- 5a ozdw 2w)yjze8)1*zvxz i 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 following2yk9dal82 d p+ 4ywyib is not a vector?

  At twice the distance from a point charge, the strengl .6-z0mg+bzb(fddhzf yda( . th of the electric field

  Is it possible to have a zero electric f9tti pht:,td uu +;v/pield value between a negative and positive charge along the line joining the two cht +p,vudh/t ti 9up:t;arges?

  Is it possible to have a zero electj* kffs qha :us qtc)t-4,:ywekc3g( *ric field value between two positive charges along the line joining the (swgjf u y feakq,:c3*)-t4qc k*th:stwo charges?

  Electric field lines near vmx 9n cg3de/;psitive point charges

  The electric field stn2mo b74fakl a4 /7ouhown

  Can electric field lines+lkojt.c+jc4pg3gm5 jz; z 6o intersect in free space?

  A solid block of metal in electrostatic equilirdx5knv+:,-uc yq3r i lo* ak8brium is placed in a uniform electrdy:aqcn, v k 8krlo3i u*r5+-xic field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere ofv axm ;./evp8ldc4 ts; equal diameters are each giva8;m/ec t;svpdv 4 .xlen 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 q)rt;h 6vn*yibm 5mh,in a region where a uniform electric field is directed straight upward. What can be said concerningb ;h) y6rvtimq*nh, m5 the charge on the block's top surface?

  If a conductor is in3i p.y msm+x)u electrostatic equilibrium near an electric charge

  A positive point chargeedu dqlq j 6y(6(y7x(v y7,buz is enclosed in a hollow metallic sphere that is grounded. ve(6b jdlqyu7qu xz7, d6(yy(As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of cdqhhq6f59w1pqryrnl 5:*l-r0j u6huonductors in static equilibrium.

State Gauss's law.

  The charge carried by one afd)n: v hn/1cgc5/gkelectron 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 than map cc(r/:j0selectrons does this piec sra(0 c/:pmjce of plastic have?

  What is the charge on 1 kg of protonacbmjk h x.)uvht8uao8e:(3* s?

  An atomic nucleus has a charge of ,fohcn 7f y;*axoqh0-$+40e$. 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 value-wib e fg,.zn.k+2lwbs of 2.0 and -4.0 mC, respectively. Whatw-.+fnl.e 2b, ibk gzw 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 is 1.0 6uszhlc a2kg2aa: q(m 6e0.y vN. What is the magnitude of the secoaq06.z:me h(vgcksalu 62 ay2nd charge?

  Two 1.0-C charges have a xw dblka)k4q*jjfjn.., :/kvl3* ydw force between them of 1.0 N. How far apart are they?

  The force between a xn9/ak/b mv f($30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cb9i t*gupfm-km 84y ;zm apart, experience a 1.0-N force. If they are movedm-mf 8gpu;z9 *iykb4t to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placedai.;r+mnx .ufqsvq76 on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the thvfqrmu . 7x.in6; a+qsird 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 placeds nu tp(nh*dt)a2); q)fcy9j m on the x-axis. A 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 acts on the charge at the origf*;t)tqyhdnpm (u2an csj9 ) )in?

  Three point charges are located at the following positions cf5n lr2,f(yo: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 l,o c frnf52(y= -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 center of a square, and eezp gow5i+/y3 rf1m*3 wk3jn2 pq*asa second point charge of -Q is p13e /a rpjof* nww+kgpm52 q3 3syz*ielaced at the upper-left corner. It is observed that an electrostatic 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)p9cxp3 cja(.iz sc+, snu1* di; Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC i+uc( 3cnz1*s,jdc x .9isappcharge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m) d;-7 aa7 .pqxsssh+bw; Q3 = 5.0 nC is at (0, 0). What is the direction of the nea;q7s.-ssa hpx d+bw 7t force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilatfoh 8xmp4-9 zceral triangle which measures 30 cm on a side. What ismo-f9 48p zchx the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are sek)rd6 k8 l7 hvmgvlt/0 bi*by-j( ti;uparated by 3.0 m. At what point, on a line between thevkr-0u j v/ky)li 7 gb8(ldit6*hb;tm two charges, 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 lnogbpdi2-eq1/3 :qg+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/g 3b:qo le1q gn-2idp it is zero?

  Charge +2q is placed at the origin and charr 9g588ug/glt3 tlrkvge -q is placed at x = 2a. Where can a tu9/g lk tglg v8r5rt83hird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g kzh5t5q mc08i. 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 attractih ,qp 1p;r**b;oxey,v kab 3uhon of a fixeduh*,;rq1 ;* hbbpav,3pekx oy proton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres q+zvz w/x g67 jd,g0jdare hung from a common point by nonconducting threads which are 30 cm z, j+6 djg0qw/vx7dgzlong. 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. What is the magnit-qdb , cn fv -4ztrh)efw9e ruti+.hj43gn7y9ude of the electric field at a distance of 1.0 m from the nucleuswu)gve zbyt9fe+4-nr9fic4rjth7q ,. dnh3 -?

  What are the magnitude and direction of the electric field bnacr4 goz7ra:6eb.(27 zwmo at a distance of 1.50 m from a 50.0-nC charg7rbna :ageo76 4z w.omcbzr(2e?

  A 5.0-C charge is 10 m from a small tes8 0qa x4a/evezt charge. What is the magnitude of the e e a8/x04veqazlectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a smalni/.ke*tv ccm /-. tlxl test charge. What is the direction of the electric fv./* t.mckint x e/c-lield?

  A 5.0-C charge is 10 m from a sq1m .twja/ p.hmall test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test cha ah.1j.qptwm/ rge?

  Two point charges each ha79ke9sddk,4ecy m- vm ve a value 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 chargs9 ec, m-4k9vme dykd7es?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4n /ro* y uwrf 56ar.g5r6gyw6uq8t1rc.0 mC charge is placed at the 50 cm mark. What is the elec581/ owgrt quu6wfnar6y*rgr6 cr.y5tric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and aq-l8r q e*-x nn0muaaaaf13 :b -4.0 mC charge is placed at theq -mq0 ab rn3exaa*u 1-n:a8fl 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 = 0.20wm5bljym5 o9 3 m. What is the magnitude of the electric field at the point midway between3my jw5 5bl9om them?

  Three 3.0 mC charges are at the three corno q;*miuar /:muc ao.;ers of a square of side 0.50 m. The last corner icm/u rqm;* u :iaoa;.os 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. Cd v*1s1rk )j,+lrhh7mw8tsnxharges 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 (w +rk*7,h s18)xjld tsmnvhr1 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 a charge ofsjpn 8: f53afbi7 ml+m 5.0 mC when it is placed in a uniform electric field. What is the mfbf 3lsm +:np7im j8a5agnitude of this electric field?

  A particle with a charge k hk l:cbsvme()1o r6z *s4a.e b9m9azof 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 electl,t f(xc8:ql nric field of 6000 N/C pointing downwqtl ,8:(f nxlcard. 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 nC. The ball i0wklw.8; akip0s ij t.s placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direi8..lwak ;0ipt 0j kswction of the electric field?

  A metal sphere of radius 10 cm carrc9 opx gn6gbx,5go 73tmpc-d (ies a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surf(o 7p tbxgx -n35cmodp, 9gc6gace?

  A metal sphere of radius 2.0 cm car/ rqx26j 26kf2zoqco rries a charge of 3.0 mC. What is the electric field 6.0 ckrrqq2o26j6f /ocz x2 m from the center of the sphere?